因式分解题目，求答案呀，各位高手帮帮忙！ 因式分解练习题及答案，求！！！
\u51e0\u9053\u56e0\u5f0f\u5206\u89e3\u9898\u76ee\u4e0d\u4f1a\u505a\uff0c\u8bf7\u5404\u4f4d\u9ad8\u624b\u5e2e\u5e2e\u5fd9\uff01\u8981\u8be6\u7ec6\u8fc7\u7a0b\uff01\uff081\uff0932a\u7684\u4e09\u6b21\u65b9-50ab\u7684\u5e73\u65b9
=2a(16a^2-25b^2)
=2a(4a+5b)(4a-5b)
\uff082\uff09\u4e5d\u5206\u4e4bm\u7684\u5e73\u65b9-\u4e8c\u767e\u4e94\u5341\u516d\u5206\u4e4bn\u7684\u56db\u6b21\u65b9
=(1/3m)^2-(1/16n^2)^2
=(1/3m+1/16n^2)(1/3m-1/16n^2)
\uff083\uff094-x\u76842n\u6b21\u65b9
=(2+x^n)(2-x^n)
(4)(a+b)\u7684\u5e73\u65b9-1
=(a+b+1)(a+b-1)
\uff085\uff091-16a\u7684\u56db\u6b21\u65b9b\u7684\u56db\u6b21\u65b9
=(1+4a^2b^2)(1-4a^2b^2)
=(1+4a^2b^2)(1+2ab)(1-2ab)
140\uff0em2(p-q)-p+q
141\uff0e(2m+3n)(2m-n)-4n(2m-n)\uff0e
142\uff0e(x+2y)2-x2-2xy\uff0e
143\uff0ea(ab+bc+ac)-abc\uff0e
144\uff0eab-a-b+1\uff0e
145\uff0exyz-xy-xz+x-yz+y+z-1\uff0e
146\uff0ex4-2y4-2x3y+xy3\uff0e
148\uff0eabc(a2+b2+c2)-a3bc+2ab2c2\uff0e
149\uff0e(a-b-c)(a+b-c)-(b-c-a)(b+c-a)\uff0e
150\uff0ea2(b-c)+b2(c-a)+c2(a-b)\uff0e
a(a+b)(a-b)-a(a+b)2\uff0e
152\uff0e(x2-2x)2+2x(x-2)+1\uff0e
153\uff0e2acd-c2a-ad2\uff0e
154\uff0e(x-y)2+12(y-x)z+36z2\uff0e
156\uff0ex2-4ax+8ab-4b2\uff0e
157\uff0ea2b2+c2d2-2abcd+2ab-2cd+1\uff0e
158\uff0e(ax+by)2+(ay-bx)2+2(ax+by)(ay-bx)\uff0e
160\uff0e(1-a2)(1-b2)-(a2-1)2(b2-1)2\uff0e
161\uff0e3x4-48y4\uff0e
162\uff0e(x+1)2-9(x-1)2\uff0e
163\uff0e(x2+pq)2-(p+q)2x2\uff0e
164\uff0e(1+2xy)2-(x2+y2)2\uff0e
165\uff0e4a2b2-(a2+b2)2\uff0e
166\uff0e4a2b2-(a2+b2-c2)2\uff0e
167\uff0e(c2-a2-b2)2-4a2b2\uff0e
168\uff0e(x2-b2+y2-a2)2-4(ab-xy)2\uff0e
169\uff0e64a4(x+1)2-49b4(x+1)4\uff0e
170\uff0eab2-ac2+4ac-4a\uff0e
171\uff0e4a2-c2+6ab+3bc\uff0e
172\uff0ex3n+y3n\uff0e
174\uff0e(x+y)3+125\uff0e
176\uff0e(m-n)6-(m+n)6\uff0e
177\uff0e(x+1)6-(x-1)6\uff0e
178\uff0ea12-b12\uff0e
179\uff0e(z-x)3-(y+z)3\uff0e
180\uff0e(3m-2n)3+(3m+2n)3\uff0e
181\uff0ex6(x2-y2)+y6(y2-x2)\uff0e
182\uff0e8(x+y)3+1\uff0e
183\uff0e(a-1)3-(b+1)3\uff0e
184\uff0e(a+b+c)3-a3-b3-c3\uff0e
185\uff0ex2+4xy+3y2\uff0e
186\uff0ex2y2-18xy+65\uff0e
187\uff0ex2+18x-144\uff0e
188\uff0ex2+30x+144\uff0e
189\uff0ex4+2x2-8\uff0e
190\uff0e3x4+6x2-9\uff0e
191\uff0e-m4+18m2-17\uff0e
192\uff0e3x4-7x2y2-20y4\uff0e
193\uff0ex5-2x3-8x\uff0e
194\uff0ea3-5a2b-300ab2\uff0e
195\uff0ex8+19x5-216x2\uff0e
196\uff0e6a4n+k-a2n+k-35ak\uff0e
199\uff0e30x2+8xy-182y2\uff0e
200\uff0em4+14m2-15\uff0e
140\uff0e\uff08p-q\uff09\uff08m-1\uff09\uff08m+1\uff09\uff0e
141\uff0e\uff082m-n\uff092\uff0e
142\uff0e2y\uff08x+2y\uff09\uff0e
143\uff0ea2\uff08b+c\uff09\uff0e
144\uff0e\uff08b-1\uff09\uff08a-1\uff09\uff0e
145\uff0e\uff08x-1\uff09\uff08y-1\uff09\uff08z-1\uff09\uff0e
\u63d0\u793a\uff1a\u65b9\u6cd5\u4e00 \u539f\u5f0f=x\uff08yz-y-z+1\uff09-\uff08yz-y-z+1\uff09
=\uff08yz-y-z+1\uff09\uff08x-1\uff09
=[y\uff08z-1\uff09-\uff08z-1\uff09]\uff08x-1\uff09
=\uff08x-1\uff09\uff08y-1\uff09\uff08z-1\uff09\uff0e
\u65b9\u6cd5\u4e8c \u539f\u5f0f=xy\uff08z-1\uff09-x\uff08z-1\uff09-y\uff08z-1\uff09+\uff08z-1\uff09
=\uff08xy-x-y+1\uff09\uff08z-1\uff09
=[x\uff08y-1\uff09-\uff08y-1\uff09]\uff08z-1\uff09
=\uff08x-1\uff09\uff08y-1\uff09\uff08z-1\uff09\uff0e
146\uff0e\uff08x-2y\uff09\uff08x+y\uff09\uff08x2-xy+y2\uff09\uff0e
\u63d0\u793a\uff1a\u65b9\u6cd5\u4e00 \u539f\u5f0f=x\uff08x3+y3\uff09-2y\uff08x3+y3\uff09
=\uff08x3+y3\uff09\uff08x-2y\uff09
=\uff08x-2y\uff09\uff08x+y\uff09\uff08x2-xy+y2\uff09\uff0e
\u65b9\u6cd5\u4e8c \u539f\u5f0f=x3\uff08x-2y\uff09+y3\uff08x-2y\uff09
=\uff08x-2y\uff09\uff08x3+y3\uff09
=\uff08x-2y\uff09\uff08x+y\uff09\uff08x2-xy+y2\uff09\uff0e
148\uff0eabc\uff08b+c\uff092\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=abc\uff08a2+b2+c2-a2+2bc\uff09\uff0e
149\uff0e2\uff08b-c\uff09\uff08a-b-c\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=\uff08a-b-c\uff09\uff08a+b-c\uff09+\uff08a-b-c\uff09\uff08b-c-a\uff09
=\uff08a-b-c\uff09[\uff08a+b-c\uff09+\uff08b-c-a\uff09]
=2\uff08b-c\uff09\uff08a-b-c\uff09\uff0e
150\uff0e\uff08a-b\uff09\uff08b-c\uff09\uff08a-c\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=a2b-a2c+b2c-ab2+c2\uff08a-b\uff09
=\uff08a2b-ab2\uff09-\uff08a2c-b2c\uff09+c2\uff08a-b\uff09
=ab\uff08a-b\uff09-c\uff08a2-b2\uff09+c2\uff08a-b\uff09
=\uff08a-b\uff09[ab-c\uff08a+b\uff09+c2]
=\uff08a-b\uff09[a\uff08b-c\uff09-c\uff08b-c\uff09]
=\uff08a-b\uff09\uff08b-c\uff09\uff08a-c\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=a\uff08a+b\uff09[a-b-\uff08a+b\uff09]=a\uff08a+b\uff09\uff08-2b\uff09
=-2ab\uff08a+b\uff09\uff1b
152\uff0e\uff08x-1\uff094\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=[x\uff08x-2\uff09]2+2•x\uff08x-2\uff09+12
=[x\uff08x-2\uff09+1]2=\uff08x2-2x+1\uff092
=\uff08x-1\uff094\uff0e
153\uff0e-a\uff08c-d\uff092\uff0e
154\uff0e\uff08x-y-6z\uff092\uff0e
156\uff0e\uff08x-2b\uff09\uff08x-4a+2b\uff09\uff0e
157\uff0e\uff08ab-cd+1\uff092\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=\uff08a2b2-2abcd+c2d2\uff09+2\uff08ab-cd\uff09+1
=\uff08ab-cd\uff092+2\uff08ab-cd\uff09+1
=\uff08ab-cd+1\uff092\uff0e
158\uff0e\uff08ax+by+ay-bx\uff092\uff0e
160\uff0e\uff081+a\uff09\uff081-a\uff09\uff081+b\uff09\uff081-b\uff09\uff08a2+b2-a2b2\uff09\uff0e
161\uff0e3\uff08x2+4y2\uff09\uff08x+2y\uff09\uff08x-2y\uff09\uff0e
162\uff0e4\uff082x-1\uff09\uff082-x\uff09\uff0e
163\uff0e\uff08x2+px+qx+pq\uff09\uff08x2-px-qx+pq\uff09\uff0e
164\uff0e\uff081+x-y\uff09\uff081-x+y\uff09\uff08x2+y2+2xy+1\uff09\uff0e
165\uff0e-\uff08a+b\uff092\uff08a-b\uff092\uff0e
166\uff0e\uff08a+b+c\uff09\uff08a+b-c\uff09\uff08c+a-b\uff09\uff08c-a+b\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=\uff082ab+a2+b2-c2\uff09\uff082ab-a2-b2+c2\uff09
=[\uff08a+b\uff092-c2][c2-\uff08a-b\uff092]
=\uff08a+b+c\uff09\uff08a+b-c\uff09\uff08c+a-b\uff09\uff08c-a+b\uff09\uff0e
167\uff0e\uff08c+a-b\uff09\uff08c-a+b\uff09\uff08c+a+b\uff09\uff08c-a-b\uff09\uff0e
168\uff0e\uff08x+y+a+b\uff09\uff08x+y-a-b\uff09\uff08x-y+a-b\uff09\uff08x-y-a+b\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=\uff08x2-b2+y2-a2+2ab-2xy\uff09\uff08x2-b2+y2-a2-2ab+2xy\uff09
=[\uff08x2-2xy+y2\uff09-\uff08a2-2ab+b2\uff09][\uff08x2+2xy+y2\uff09
-\uff08a2+2ab+b2\uff09]
=[\uff08x-y\uff092-\uff08a-b\uff092][\uff08x+y\uff092-\uff08a+b\uff092]
=\uff08x-y+a-b\uff09\uff08x-y-a+b\uff09\uff08x+y+a+b\uff09\uff08x+y-a-b\uff09\uff0e
169\uff0e\uff08x+1\uff092\uff088a2+7b2x+7b2\uff09\uff088a2-7b2x-7b2\uff09\uff0e
170\uff0ea\uff08b-c+2\uff09\uff08b+c-2\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=a\uff08b2-c2+4c-4\uff09
=a\uff08b2-c2+2b-2b+2c+2c-4\uff09
=a[\uff08b-c\uff09\uff08b+c\uff09-2\uff08b-c\uff09+2\uff08b+c\uff09-4]
=a[\uff08b-c\uff09+2][\uff08b+c\uff09-2]\uff0e
171\uff0e\uff082a+c\uff09\uff082a-c+3b\uff09\uff0e
172\uff0e\uff08xn+yn\uff09\uff08x2n-xnyn+y2n\uff09\uff0e
174\uff0e\uff08x+y+5\uff09\uff08x2+2xy+y2-5x-5y+25\uff09\uff0e
176\uff0e-4mn\uff083n2+m2\uff09\uff083m2+n2\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=[\uff08m-n\uff093]2-[\uff08m+n\uff093]2
=[\uff08m-n\uff093+\uff08m+n\uff093][\uff08m-n\uff093-\uff08m+n\uff093]
=2m[\uff08m-n\uff092-\uff08m-n\uff09\uff08m+n\uff09\uff08m+n\uff092]
\u00d7{-2n[\uff08m-n\uff092+\uff08m-n\uff09\uff08m+n\uff09+\uff08m+n\uff092]}
=-4mn\uff08m2+3n2\uff09\uff083m2+n2\uff09\uff0e
177\uff0e4x\uff08x2+3\uff09\uff083x2+1\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=[\uff08x+1\uff093]2-[\uff08x-1\uff093]2
=[\uff08x+1\uff093+\uff08x-1\uff093][\uff08x+1\uff093-\uff08x-1\uff093]
=2x[\uff08x+1\uff092-\uff08x+1\uff09\uff08x-1\uff09+\uff08x-1\uff092]
\u00d72[\uff08x+1\uff092+\uff08x+1\uff09\uff08x-1\uff09+\uff08x-1\uff092]
=4x\uff08x2+3\uff09\uff083x2+1\uff09\uff0e
178\uff0e\uff08a-b\uff09\uff08a+b\uff09\uff08a2+b2\uff09\uff08a2+ab+b2\uff09\uff08a2-ab+b2\uff09\uff08a4-a2b2+b4\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=\uff08a6\uff092-\uff08b6\uff092=\uff08a6+b6\uff09\uff08a6-b6\uff09
=[\uff08a2\uff093+\uff08b2\uff093][\uff08a3\uff092-\uff08b3\uff092]
=\uff08a2+b2\uff09\uff08a4-a2b2+b4\uff09\uff08a3+b3\uff09\uff08a3-b3\uff09\uff0e
179\uff0e-\uff08x+y\uff09\uff08x2+y2+3z2-xy+3yz-3xz\uff09\uff0e
180\uff0e18m\uff083m2+4n2\uff09\uff0e
181\uff0e\uff08x+y\uff092\uff08x-y\uff092\uff08x2-xy+y2\uff09\uff08x2+xy+y2\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=\uff08x2-y2\uff09\uff08x6-y6\uff09
=\uff08x+y\uff09\uff08x-y\uff09\uff08x3+y3\uff09\uff08x3-y3\uff09\uff0e
182\uff0e\uff082x+2y+1\uff09\uff084x2+8xy+4y2-2x-2y+1\uff09\uff0e
183\uff0e\uff08a-b-2\uff09\uff08a2+ab+b2-a+b+1\uff09\uff0e
184\uff0e3\uff08b+c\uff09\uff08a+b\uff09\uff08c+a\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=[\uff08a+b+c\uff093-a3]-\uff08b3+c3\uff09\uff0e
185\uff0e\uff08x+3y\uff09\uff08x+y\uff09\uff0e
186\uff0e\uff08xy-13\uff09\uff08xy-5\uff09\uff0e
187\uff0e\uff08x-6\uff09\uff08x+24\uff09\uff0e
188\uff0e\uff08x+6\uff09\uff08x+24\uff09\uff0e
189\uff0e\uff08x2-2\uff09\uff08x2+4\uff09\uff0e
190\uff0e3\uff08x2+3\uff09\uff08x+1\uff09\uff08x-1\uff09\uff0e
191\uff0e\uff08m2-17\uff09\uff081+m\uff09\uff081-m\uff09\uff0e
192\uff0e\uff083x2+5y2\uff09\uff08x+2y\uff09\uff08x-2y\uff09\uff0e
193\uff0ex\uff08x+2\uff09\uff08x-2\uff09\uff08x2+2\uff09\uff0e
194\uff0ea\uff08a-20b\uff09\uff08a+15b\uff09\uff0e
195\uff0ex2\uff08x+3\uff09\uff08x2-3x+9\uff09\uff08x-2\uff09\uff08x2+2x+4\uff09\uff0e
\u63d0\u793a\uff1a\u539f\u5f0f=x2\uff08x6+19x3-216\uff09
=x2\uff08x3+27\uff09\uff08x3-8\uff09
=x3\uff08x+3\uff09\uff08x2-3x+9\uff09\uff08x-2\uff09\uff08x2+2x+4\uff09\uff0e
196\uff0eak\uff082a2n-5\uff09\uff083a2n+7\uff09\uff0e
199\uff0e2\uff083x-7y\uff09\uff085x+13y\uff09\uff0e
200\uff0e\uff08m2+15\uff09\uff08m+1\uff09\uff08m-1\uff09\uff0e
201\uff0em2(p\uff0dq)\uff0dp\uff0bq\uff1b
202\uff0ea(ab\uff0bbc\uff0bac)\uff0dabc\uff1b
203\uff0ex4\uff0d2y4\uff0d2x3y\uff0bxy3\uff1b
204\uff0eabc(a2\uff0bb2\uff0bc2)\uff0da3bc\uff0b2ab2c2\uff1b
205\uff0ea2(b\uff0dc)\uff0bb2(c\uff0da)\uff0bc2(a\uff0db)\uff1b
206\uff0e(x2\uff0d2x)2\uff0b2x(x\uff0d2)\uff0b1\uff1b
207\uff0e(x\uff0dy)2\uff0b12(y\uff0dx)z\uff0b36z2\uff1b
208\uff0ex2\uff0d4ax\uff0b8ab\uff0d4b2\uff1b
209\uff0e(ax\uff0bby)2\uff0b(ay\uff0dbx)2\uff0b2(ax\uff0bby)(ay\uff0dbx)\uff1b
210\uff0e(1\uff0da2)(1\uff0db2)\uff0d(a2\uff0d1)2(b2\uff0d1)2\uff1b
211\uff0e(x\uff0b1)2\uff0d9(x\uff0d1)2\uff1b
212\uff0e4a2b2\uff0d(a2\uff0bb2\uff0dc2)2\uff1b
213\uff0eab2\uff0dac2\uff0b4ac\uff0d4a\uff1b
214\uff0ex3n\uff0by3n\uff1b
215\uff0e(x\uff0by)3\uff0b125\uff1b
216\uff0e(3m\uff0d2n)3\uff0b(3m\uff0b2n)3\uff1b
217\uff0ex6(x2\uff0dy2)\uff0by6(y2\uff0dx2)\uff1b
218\uff0e8(x\uff0by)3\uff0b1\uff1b
219\uff0e(a\uff0bb\uff0bc)3\uff0da3\uff0db3\uff0dc3\uff1b
220\uff0ex2\uff0b4xy\uff0b3y2\uff1b
221\uff0ex2\uff0b18x\uff0d144\uff1b
222\uff0ex4\uff0b2x2\uff0d8\uff1b
223\uff0e\uff0dm4\uff0b18m2\uff0d17\uff1b
224\uff0ex5\uff0d2x3\uff0d8x\uff1b
225\uff0ex8\uff0b19x5\uff0d216x2\uff1b
226\uff0e(x2\uff0d7x)2\uff0b10(x2\uff0d7x)\uff0d24\uff1b
227\uff0e5\uff0b7(a\uff0b1)\uff0d6(a\uff0b1)2\uff1b
228\uff0e(x2\uff0bx)(x2\uff0bx\uff0d1)\uff0d2\uff1b
229\uff0ex2\uff0by2\uff0dx2y2\uff0d4xy\uff0d1\uff1b
230\uff0e(x\uff0d1)(x\uff0d2)(x\uff0d3)(x\uff0d4)\uff0d48\uff1b
231\uff0ex2\uff0dy2\uff0dx\uff0dy\uff1b
232\uff0eax2\uff0dbx2\uff0dbx\uff0bax\uff0d3a\uff0b3b\uff1b
233\uff0em4\uff0bm2\uff0b1\uff1b
234\uff0ea2\uff0db2\uff0b2ac\uff0bc2\uff1b
235\uff0ea3\uff0dab2\uff0ba\uff0db\uff1b
236\uff0e625b4\uff0d(a\uff0db)4\uff1b
237\uff0ex6\uff0dy6\uff0b3x2y4\uff0d3x4y2\uff1b
238\uff0ex2\uff0b4xy\uff0b4y2\uff0d2x\uff0d4y\uff0d35\uff1b
239\uff0em2\uff0da2\uff0b4ab\uff0d4b2\uff1b
240\uff0e5m\uff0d5n\uff0dm2\uff0b2mn\uff0dn2\uff0e
\u53c2\u8003\u7b54\u6848:
\u4e09\u3001\u56e0\u5f0f\u5206\u89e3\uff1a
1\uff0e(p\uff0dq)(m\uff0d1)(m\uff0b1)\uff0e
8\uff0e(x\uff0d2b)(x\uff0d4a\uff0b2b)\uff0e
11\uff0e4(2x\uff0d1)(2\uff0dx)\uff0e
20\uff0e(x\uff0b3y)(x\uff0by)\uff0e
21\uff0e(x\uff0d6)(x\uff0b24)\uff0e
27\uff0e(3\uff0b2a)(2\uff0d3a)\uff0e
31\uff0e(x\uff0by)(x\uff0dy\uff0d1)\uff0e
38\uff0e(x\uff0b2y\uff0d7)(x\uff0b2y\uff0b5)\uff0e
=(27a--b)(--a--27b)
=(b--27a)(a+27b).
2. 4--12(x+y)+9(x+y)^2=[2--3(x+y)]^2
=(2--3x--3y)^2.
3. a^3+8b^3=(a+2b)(a^2--2ab+4b^2).
4. 1--1/8a^3=(1--1/2a)(1+1/2a+1/4a^2).
5. 0.064p^3+1=(0.4p+1)(0.16p^2--0.4p+1).
6. p^3--q^6=(p--q^2)(p^2+pq^2+q^4).
7. --a--a^4=--a(1+a^3)
=--a(1+a)(1--a+a^2).
8. m^2x^2--8mx+12=(mx--2)(mx--6).
9. 1--26a^2+25a^4=(1--a^2)(1--25a^2)
=(1+a)(1--a)(1+5a)(1--5a).
10. --x^2y+6xy--8y=--y(x^2--6x+8)
=--y(x--2)(x--4).
11. 3a^2--7a--6=(a--3)(3a+2).
12. 6x^2+x--35=(2x+5)(3x--7).
13. (x^2--5x)(x^2--5x--2)--24=(x^2--5x)^2--2(x^2--5x)--24
=(x^2--5x--6)(x^2--5x+4)
=(x+1)(x--6)(x--1)(x--4).
169（a-b）²-196（a+b）²=[13(a-b)+14(a+b)][13(a-b)-14(a+b)]=(27a+b)(-a-27b)
4-12（x-y）+9（x+y）²=[2-3(x+y)]^2=(3x+3y-2)^2
a³+8b³=(a+2b)(a^2-2ab+4b^2)=
1-八分之一a³=7/8-a^3=[(三次根号7)/2-a][(三次根号7)^2/4+(三次根号7)*a/2+a^2]
0.064p³+1=(0.4p+1)(0.16p^2-0.4p+1)
p³-q六次方=(p-q^2)(p^2+pq^2+q^4)
-a-a四次方=-a(1+a^3)--a(1+a)(1-a+a^2)
m²x²-8mx+12=m^2x^2-8mx+16-4=(mx-4)^2-4=(mx-4+2)(mx-4-2)=(mx-2)(mx-6)
1-26a²+25a四次方=(1-25a^2)(1-a^2)=(1-5a)(1+5a)(1+a)(1-a)
-x²y+6xy-8y=-y(x^2-6x+8)=-y(x-2)(x-4)
3a²-7a-6=((3a+2)(a-3)
6x²+x-35=(3x-7)(2x+5)
（x²-5x）（x²-5x-2）-24=(x^2-5x)^2-2(x^2-5x)-24=(x^2-5x-6)(x^2-5x+4)=(x-6)(x+1)(x-1)(x-4)
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