求大家帮忙做几道因式分解的题目 跪求了 求帮忙检查几道因式分解
\u8dea\u6c42\u51e0\u9053\u56e0\u5f0f\u5206\u89e3\u9898\uff0c\u8bf7\u9ad8\u624b\u7b54\uff0c\u6025\uff0c\u5728\u7ebf\u7b49(a^2-b^2)x^2-4abx-a^2+b^2;
\uff08a+b)(a-b)(x+1)(x-1)-4abx
3\uff0c4\u4e0d\u5bf9
1。 6^p(p+q)^2-4p(p+q)^2=（p+q)^2(6p-4p)
=2p(p+q)^2
2。 x(x+y)^2(x-y)^2- x(x+y)^2
=x(x+y)^2[(x-y)^2-1]
=x(x+y)^2(x-y+1)(x-y-1)
3。3(x-1)^3 y-(1-x)^3 z
=3(x-1)^3 y+(x-1)^3 z
=(x-1)^3(3y+z)
=(x-1)(x^2+x+1)(3y+z)
4。0.5×3.7^2-3.7×2.7+0.5×2.7^2
=0.5(3.7^2-2x3.7x2.7+2.7^2)
=0.5(3.7-2.7)^2
=0.5x1^2
=0.5
绛旓細(1锛塧x²-a²x+bx²-2abx+a²b-b²x+ab²=(a+b)x²-(a²+2ab+b²)x+a²b+ab²=(a+b)[x²-(a+b)x+ab]=(a+b)(x-a)(x-b)锛2锛夛紙a+b-2ab锛(a+b-2)+(1-ab)² 浠+b=x 锛宎b=y 鍘...
绛旓細鎵鏈棰樼洰閮芥槸鐢ㄥ崄瀛楃浉涔樻硶杩涜鍥犲紡鍒嗚В銆傝繃绋嬪涓嬶細3銆20x²-43xy+14y²=锛4x-7y锛夛紙5x-2y锛4銆18x²-19x+5 =锛9x-5锛夛紙2x-1锛5銆6x²-13x+6 =锛3x-2y锛夛紙2x-3y锛6銆5x²+4xy-28y²=锛坸-2锛夛紙5x+14锛7銆-35m²n²+11mn+6 =-35...
绛旓細1.(3a锛峛)2锛4(3a锛峛)(a锛3b)锛4(a锛3b)2锛漑3a-b-2(a+3b)]^2=(a-7b)^2 2.(a锛3)2锛6(a锛3)锛(a+3)(a-3)3(x锛1)2(x锛2)锛(x锛1)(x锛2)2锛-(x+1)(x+2)4.abc锛媋b锛4a锛漚(bc+b-4)5.16x2锛81锛(4x+9)(4x-9)6.9x2锛30x锛25锛(3x-5)^2 7....
绛旓細1.锛3x-2y)²-9x²=(3x-2y+3x)(3x-2y-3x)=-2y(6x-2y)2.5ab³-5ab =5ab(b^2-1)=5ab(b+1)(b-1)3.-x鐨勫洓娆℃柟+81 =(9-x^2)(9+x^2)=(3-x)(3+x)(9+x^2)
绛旓細x^2+9x+20=(x+5)(x+4)x^2-5x+6=(x-3)(x-2)x^2+x-2=(x-1)(x+2)x^2+x-2=(x-1)(x+2)x^2+x-2=(x-1)(x+2)x^2-3x-18=(x-6)(x+3)-x^2+7x-12=(4-x)(x-3)-x^2-x+6=(x+3)(2-x)2x^2-4x-30==2(x^2-2x-15)=2(x-5)(x+3)-5x^2+25...
绛旓細1.(1)=[2(x²+6x+1)+(x²+1)][(x²+6x+1)+2(x²+1)]=(2x²+12x+2+x²+1)(x²+6x+1+2x²+2)=(3x²+12x+3)(3x²+6x+3)=9(x²+4x+1)(x+1)²(2)=(x²+8x+7)(x²+8x+15)+15 ...
绛旓細1.3^2000-4脳3^1999+10脳3^1998 =3^1998脳(3²-4脳3+10)=3^1998脳(9-12+10)=3^1998脳7 鑳借7鏁撮櫎 2.m²-4n²+4n-1 =m²-(4n²-4n+1)=m²-(2n-1)²=(m-2n+1)*(m+2n-1)3.x²-4y²+2x-4y =(x-2y)(x+2y)+2...
绛旓細2.宸茬煡2x-y=1/3,xy=2,姹2x^4y^3-x^3y^4鐨勫 2x^4y^3-x^3y^4 =(xy)^3(2x-y)=2^3*1/3 =8/3 3.鑻4x^2-4x+9y^2-12y+5=0,姹6x+2/3y鐨勫 4x^2-4x+9y^2-12y+5=0 (4x^2-4x+1)+(9y^2-12y+4)=0 (2x-1)^2+(3y-2)^2=0 涓婂紡鎴愮珛蹇呴』鏈2x-1=0,x=1...
绛旓細3. x^2-4y^2-3x+6y==(x+2y)(x-2y)-3(x-2y)=(x-2y)(x+2y-3)4. -x^3-2x^2-x+4xy^2=-x(x²+2x+1-4y²)=-x(x+1-2y)(x+1+2y)5. 9a^2-4b^2-6a+1=9a²-6a+1-4b²=(3a-1)²-4b²=(3a-1+2b)(3a-1-2b)6. x^2...
绛旓細(4)x^2锛2锛3x锛(x-1)(x-2)(5)12x^2锛23x锛24锛(3x-8)(4x+3)(6)(x锛6)(x锛6)锛(x锛6)锛(x-6)(x+5)(7)3(x锛2)(x锛5)锛(x锛2)(x锛3)锛2(x-6)(x+2)(8)9x^2锛42x锛49锛(3x+7)^2 (9)x(x锛2)锛峹锛漻(x+1)(10)x^2锛4x锛峚x锛4a锛(x-4)(x-...
