初二因式分解计算题100道【本人要题要答案，必须是混合运算】 本人因式分解没学好好 求初一到初二因式分解习题50到100道...
\u6c42\u516b\u5e74\u7ea7\u6570\u5b66\u7b2c\u4e00\u5b66\u671f100\u9053\u56e0\u5f0f\u5206\u89e3\u9898 \uff08\u5fc5\u987b\u6709\u7b54\u6848)http://wenku.baidu.com/link?url=4VNBWemj_ktO7298LXwWhkv0NPlr6Np5rZO7Vs26b48UAh5yBOA3ufvZwFoTkpGHu5EHRIaNv1Dleq6t_OsPAGpsW-LutTuBgl1ejybHHnC
1.(3a\uff0db)2\uff0d4(3a\uff0db)(a\uff0b3b)\uff0b4(a\uff0b3b)2\uff1d[3a-b-2(a+3b)]^2=(a-7b)^2
2.(a\uff0b3)2\uff0d6(a\uff0b3)\uff1d(a+3)(a-3)
3(x\uff0b1)2(x\uff0b2)\uff0d(x\uff0b1)(x\uff0b2)2\uff1d-(x+1)(x+2)
4.abc\uff0bab\uff0d4a\uff1da(bc+b-4)
5.16x2\uff0d81\uff1d(4x+9)(4x-9)
6.9x2\uff0d30x\uff0b25\uff1d(3x-5)^2
7.x2\uff0d7x\uff0d30\uff1d(x-10)(x+3)
8.x2\uff0d25\uff1d(x+5)(x-5)
9.x2\uff0d20x\uff0b100\uff1d(x-10)^2
10.x2\uff0b4x\uff0b3\uff1d(x+1)(x+3)
11.4x2\uff0d12x\uff0b5\uff1d(2x-1)(2x-5)
12.3ax2\uff0d6ax\uff1d3ax(x-2)
13.x(x\uff0b2)\uff0dx\uff1dx(x+1)
14.x2\uff0d4x\uff0dax\uff0b4a\uff1d(x-4)(x-a)
15.25x2\uff0d49\uff1d(5x-9)(5x+9)
16.36x2\uff0d60x\uff0b25\uff1d(6x-5)^2
17.4x2\uff0b12x\uff0b9\uff1d(2x+3)^2
18.x2\uff0d9x\uff0b18\uff1d(x-3)(x-6)
19.2x2\uff0d5x\uff0d3\uff1d(x-3)(2x+1)
20.12x2\uff0d50x\uff0b8\uff1d2(6x-1)(x-4)
21.(x\uff0b2)(x\uff0d3)\uff0b(x\uff0b2)(x\uff0b4)\uff1d(x+2)(2x-1)
22.2ax2\uff0d3x\uff0b2ax\uff0d3\uff1d (x+1)(2ax-3)
23.9x2\uff0d66x\uff0b121\uff1d(3x-11)^2
24.8\uff0d2x2\uff1d2(2+x)(2-x)
25.x2\uff0dx\uff0b14 \uff1d\u6574\u6570\u5185\u65e0\u6cd5\u5206\u89e3
26.9x2\uff0d30x\uff0b25\uff1d(3x-5)^2
27.\uff0d20x2\uff0b9x\uff0b20\uff1d(-4x+5)(5x+4)
28.12x2\uff0d29x\uff0b15\uff1d(4x-3)(3x-5)
29.36x2\uff0b39x\uff0b9\uff1d3(3x+1)(4x+3)
30.21x2\uff0d31x\uff0d22\uff1d(21x+11)(x-2)
31.9x4\uff0d35x2\uff0d4\uff1d(9x^2+1)(x+2)(x-2)
32.(2x\uff0b1)(x\uff0b1)\uff0b(2x\uff0b1)(x\uff0d3)\uff1d2(x-1)(2x+1)
33.2ax2\uff0d3x\uff0b2ax\uff0d3\uff1d(x+1)(2ax-3)
34.x(y\uff0b2)\uff0dx\uff0dy\uff0d1\uff1d(x-1)(y+1)
35.(x2\uff0d3x)\uff0b(x\uff0d3)2\uff1d(x-3)(2x-3)
36.9x2\uff0d66x\uff0b121\uff1d(3x-11)^2
37.8\uff0d2x2\uff1d2(2-x)(2+x)
38.x4\uff0d1\uff1d(x-1)(x+1)(x^2+1)
39.x2\uff0b4x\uff0dxy\uff0d2y\uff0b4\uff1d(x+2)(x-y+2)
40.4x2\uff0d12x\uff0b5\uff1d(2x-1)(2x-5)
41.21x2\uff0d31x\uff0d22\uff1d(21x+11)(x-2)
42.3x2\uff0d6x\uff1d3x(x-2)
43.49x2\uff0d25\uff1d(7x+5)(7x-5)
44.6x2\uff0d13x\uff0b5\uff1d(2x-1)(3x-5)
45.x2\uff0b2\uff0d3x\uff1d(x-1)(x-2)
46.12x2\uff0d23x\uff0d24\uff1d(3x-8)(4x+3)
47.(x\uff0b6)(x\uff0d6)\uff0d(x\uff0d6)\uff1d(x-6)(x+5)
48.3(x\uff0b2)(x\uff0d5)\uff0d(x\uff0b2)(x\uff0d3)\uff1d2(x-6)(x+2)
49.9x2\uff0b42x\uff0b49\uff1d(3x+7)^2 \u3002
\u8fd8\u6709\u8fd9; http://wenku.baidu.com/view/e9929a3d5727a5e9856a61e4.html
\u5341\u5b57\u76f8\u4e58\u6cd5\u770b\u8fd9 http://baike.baidu.com/view/198055.htm
2.(a＋3)2－6(a＋3)＝(a+3)(a-3)
3(x＋1)2(x＋2)－(x＋1)(x＋2)2＝-(x+1)(x+2)
4.abc＋ab－4a＝a(bc+b-4)
5.16x2－81＝(4x+9)(4x-9)
6.9x2－30x＋25＝(3x-5)^2
7.x2－7x－30＝(x-10)(x+3)
8.x2－25＝(x+5)(x-5)
9.x2－20x＋100＝(x-10)^2
10.x2＋4x＋3＝(x+1)(x+3)
11.4x2－12x＋5＝(2x-1)(2x-5)
12.3ax2－6ax＝3ax(x-2)
13.x(x＋2)－x＝x(x+1)
14.x2－4x－ax＋4a＝(x-4)(x-a)
15.25x2－49＝(5x-9)(5x+9)
16.36x2－60x＋25＝(6x-5)^2
17.4x2＋12x＋9＝(2x+3)^2
18.x2－9x＋18＝(x-3)(x-6)
19.2x2－5x－3＝(x-3)(2x+1)
20.12x2－50x＋8＝2(6x-1)(x-4)
21.(x＋2)(x－3)＋(x＋2)(x＋4)＝(x+2)(2x-1)
22.2ax2－3x＋2ax－3＝ (x+1)(2ax-3)
23.9x2－66x＋121＝(3x-11)^2
24.8－2x2＝2(2+x)(2-x)
25.x2－x＋14 ＝整数内无法分解
26.9x2－30x＋25＝(3x-5)^2
27.－20x2＋9x＋20＝(-4x+5)(5x+4)
28.12x2－29x＋15＝(4x-3)(3x-5)
29.36x2＋39x＋9＝3(3x+1)(4x+3)
30.21x2－31x－22＝(21x+11)(x-2)
31.9x4－35x2－4＝(9x^2+1)(x+2)(x-2)
32.(2x＋1)(x＋1)＋(2x＋1)(x－3)＝2(x-1)(2x+1)
33.2ax2－3x＋2ax－3＝(x+1)(2ax-3)
34.x(y＋2)－x－y－1＝(x-1)(y+1)
35.(x2－3x)＋(x－3)2＝(x-3)(2x-3)
36.9x2－66x＋121＝(3x-11)^2
37.8－2x2＝2(2-x)(2+x)
38.x4－1＝(x-1)(x+1)(x^2+1)
39.x2＋4x－xy－2y＋4＝(x+2)(x-y+2)
40.4x2－12x＋5＝(2x-1)(2x-5)
41.21x2－31x－22＝(21x+11)(x-2)
42.3x2－6x＝3x(x-2)
43.49x2－25＝(7x+5)(7x-5)
44.6x2－13x＋5＝(2x-1)(3x-5)
45.x2＋2－3x＝(x-1)(x-2)
46.12x2－23x－24＝(3x-8)(4x+3)
47.(x＋6)(x－6)－(x－6)＝(x-6)(x+5)
48.3(x＋2)(x－5)－(x＋2)(x－3)＝2(x-6)(x+2)
49.9x2＋42x＋49＝(3x+7)^2 。
还有这; http://wenku.baidu.com/view/e9929a3d5727a5e9856a61e4.html
十字相乘法看这 http://baike.baidu.com/view/198055.htm
1.(3a－b)2－4(3a－b)(a＋3b)＋4(a＋3b)2＝[3a-b-2(a+3b)]^2=(a-7b)^2
2.(a＋3)2－6(a＋3)＝(a+3)(a-3)
3(x＋1)2(x＋2)－(x＋1)(x＋2)2＝-(x+1)(x+2)
4.abc＋ab－4a＝a(bc+b-4)
5.16x2－81＝(4x+9)(4x-9)
6.9x2－30x＋25＝(3x-5)^2
7.x2－7x－30＝(x-10)(x+3)
8.x2－25＝(x+5)(x-5)
9.x2－20x＋100＝(x-10)^2
10.x2＋4x＋3＝(x+1)(x+3)
11.4x2－12x＋5＝(2x-1)(2x-5)
12.3ax2－6ax＝3ax(x-2)
13.x(x＋2)－x＝x(x+1)
14.x2－4x－ax＋4a＝(x-4)(x-a)
15.25x2－49＝(5x-9)(5x+9)
16.36x2－60x＋25＝(6x-5)^2
17.4x2＋12x＋9＝(2x+3)^2
18.x2－9x＋18＝(x-3)(x-6)
19.2x2－5x－3＝(x-3)(2x+1)
20.12x2－50x＋8＝2(6x-1)(x-4)
21.(x＋2)(x－3)＋(x＋2)(x＋4)＝(x+2)(2x-1)
22.2ax2－3x＋2ax－3＝ (x+1)(2ax-3)
23.9x2－66x＋121＝(3x-11)^2
24.8－2x2＝2(2+x)(2-x)
25.x2－x＋14 ＝整数内无法分解
26.9x2－30x＋25＝(3x-5)^2
27.－20x2＋9x＋20＝(-4x+5)(5x+4)
28.12x2－29x＋15＝(4x-3)(3x-5)
29.36x2＋39x＋9＝3(3x+1)(4x+3)
30.21x2－31x－22＝(21x+11)(x-2)
31.9x4－35x2－4＝(9x^2+1)(x+2)(x-2)
32.(2x＋1)(x＋1)＋(2x＋1)(x－3)＝2(x-1)(2x+1)
33.2ax2－3x＋2ax－3＝(x+1)(2ax-3)
34.x(y＋2)－x－y－1＝(x-1)(y+1)
35.(x2－3x)＋(x－3)2＝(x-3)(2x-3)
36.9x2－66x＋121＝(3x-11)^2
37.8－2x2＝2(2-x)(2+x)
38.x4－1＝(x-1)(x+1)(x^2+1)
39.x2＋4x－xy－2y＋4＝(x+2)(x-y+2)
40.4x2－12x＋5＝(2x-1)(2x-5)
41.21x2－31x－22＝(21x+11)(x-2)
42.3x2－6x＝3x(x-2)
43.49x2－25＝(7x+5)(7x-5)
44.6x2－13x＋5＝(2x-1)(3x-5)
45.x2＋2－3x＝(x-1)(x-2)
46.12x2－23x－24＝(3x-8)(4x+3)
47.(x＋6)(x－6)－(x－6)＝(x-6)(x+5)
48.3(x＋2)(x－5)－(x＋2)(x－3)＝2(x-6)(x+2)
49.9x2＋42x＋49＝(3x+7)^2 。
还有这; http://wenku.baidu.com/view/e9929a3d5727a5e9856a61e4.html
十字相乘法看这 http://baike.baidu.com/view/198055.htm
绛旓細50閬鍒濅簩鍥犲紡鍒嗚В鏁板棰: http://wenku.baidu.com/view/d5cb58323968011ca30091ff.html 涓銆侀夋嫨棰:(姣忓皬棰4鍒,鍏8鍒) 1.涓嬪垪鍚勫紡璁＄畻 姝ｇ‘鐨勬槸( ) A. B. C. D. 2. 鍖栫畝 +1绛変簬( ) A. B. C. D. 3. 鑻-b=2ab,鍒 鐨勫间负( ) A. B.- C.2 D.-2 4. 鑻 ,鍒橫銆丯鐨勫 鍒嗗埆涓...
绛旓細4銆佸崄瀛楃浉涔樻硶鐨勭己闄凤細1銆佹湁浜棰樼洰鐢ㄥ崄瀛楃浉涔樻硶鏉ヨВ姣旇緝绠鍗曪紝浣嗗苟涓嶆槸姣忎竴閬撻鐢ㄥ崄瀛楃浉涔樻硶鏉ヨВ閮界畝鍗曘2銆佸崄瀛楃浉涔樻硶鍙傜敤浜庝簩娆′笁椤瑰紡绫诲瀷鐨勯鐩3銆佸崄瀛楃浉涔樻硶姣旇緝闅惧銆5銆佸崄瀛楃浉涔樻硶瑙ｉ瀹炰緥锛1)銆 鐢ㄥ崄瀛楃浉涔樻硶瑙ｄ竴浜涚畝鍗曞父瑙佺殑棰樼洰 渚1鎶妋²+4m-12鍒嗚В鍥犲紡 鍒嗘瀽锛鏈涓父鏁伴」-...
绛旓細27鍒嗕箣1a^3+3鍒嗕箣1a^2+a+1 =(27鍒嗕箣1a^3+1)+(3鍒嗕箣1a^2+a) =(3鍒嗕箣1a+1)(9鍒嗕箣1a^2-3鍒嗕箣1a+1)+a(3鍒嗕箣1a+1) =(3鍒嗕箣1a+1)(9鍒嗕箣1a^2+3鍒嗕箣2a+1) x^6-3x^4y+3x^2y^2-y^3 =(x^6-y^3)-3x^2y(x^2-y) =(x^2-y)(x^4+x^2y+y^2)-...
绛旓細15a^3+10a2^ =5a^2(3a+2)12abc-3bc^2 =3bc(4a-c)鎴戝垵涓変簡..鏁板鍏ㄧ骇绗竴Q446383183 浜ゆ祦涓嬪惂.
绛旓細1銆5ax+5bx+3ay+3by 瑙ｏ細=5x(a+b)+3y(a+b)=(5x+3y)(a+b)2銆亁^3-x^2+x-1 瑙ｏ細=(x^3-x^2)+(x-1)=x^2(x-1)+ (x-1)=(x-1)(x^2+1)3銆亁2-x-y2-y 瑙ｏ細=(x2-y2)-(x+y)=(x+y)(x-y)-(x+y)=(x+y)(x-y-1)4銆乥c(b+c)+ca(c-a)-ab(a+...
绛旓細1.(x+y)²-4锛坸+y-1)=(x+y)²-4(x+y)+4 =(x+y)²-2脳2(x+y)+2²=(x+y-2)²2.(x-y)²+4xy =x²-2xy+y²+4xy =x²+2xy+y²=(x+y)²3.(x-1)(x+3)+1 =x²+2x+1-3 =(x+1)²-3...
绛旓細10x^5-25x^4+30x^3 鏄笉鏄繖鏍凤紵=5x^3(x^2-5x+6)=5x^3(x-2)(x-3)2a^4-12a^3+18a^2 =2a^2(a^2-6a+9)=2a^2(a-3)^2 63a^3b-28ab =7ab(9a^2-4)=7ab(3a+2)(3a-2)9a(x-y)^2-18b(y-x)=9a(x-y)^2+18b(x-y)=9(x-y)(ax-ay+2b)(x^2-7)^2-4(...
绛旓細35.鍥犲紡鍒嗚Вx2-25= 銆 36.鍥犲紡鍒嗚Вx2-20x+100= 銆 37.鍥犲紡鍒嗚Вx2+4x+3= 銆 38.鍥犲紡鍒嗚В4x2-12x+5= 銆 39.鍥犲紡鍒嗚В涓嬪垪鍚勫紡: (1)3ax2-6ax= 銆 (2)x(x+2)-x= 銆 (3)x2-4x-ax+4a= 銆 (4)25x2-49= 銆 (5)36x2-60x+25= 銆 (6)4x2+12x+9= 銆 (7)x2-9x+18= 銆 (...
绛旓細1. ½X²-2X+2=1/2(x²-4x+4)=1/2(x-2)²2. 宸茬煡A+B=8锛屼笖A²-B²=18锛屽垯浠ｆ暟寮廇-2B=-5/8 3. 宸茬煡涓姝ｆ柟褰㈢殑闈㈢Н涓9蟺X²+6蟺X+蟺锛圶锛0锛夛紝鐜板湪瑕佺敾涓涓笌姝ゆ鏂瑰舰闈㈢Н鐩哥瓑鐨勫渾锛屽垯鍦嗙殑鍗婂緞搴斾负蟺(3x+1)/2 4. ...
绛旓細9(a-b)²+12(a²-b²)+4(a+b)²=(3(a-b))+2*3*2(a+b)(a-b)+(2(a+b))²=(3(a-b)+2(a+b))²=(5a-b)²a³-10a²+25a =a(a²-2*5*a+5²)=a(a-5)²x²+2x+1-y²=(x+1)&#...
