(a-b)^3-2ab(a-b)x(x+y)(x-y)-x(x+y)^2a^2(x-2a)^2-a(2a-x)^2(b+c)x+(c+a)x+(a+b)xa^3(b+c-d)+a^2b(c+d-a)-a^2c(d+a+b)

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(a-b)^3-2ab(a-b)x(x+y)(x-y)-x(x+y)^2a^2(x-2a)^2-a(2a-x)^2(b+c)x+(c+a)x+(a+b)xa^3(b+c-d)+a^2b(c+d-a)-a^2c(d+a+b)
(a-b)^3-2ab(a-b)
x(x+y)(x-y)-x(x+y)^2
a^2(x-2a)^2-a(2a-x)^2
(b+c)x+(c+a)x+(a+b)x
a^3(b+c-d)+a^2b(c+d-a)-a^2c(d+a+b)

(a-b)^3-2ab(a-b)x(x+y)(x-y)-x(x+y)^2a^2(x-2a)^2-a(2a-x)^2(b+c)x+(c+a)x+(a+b)xa^3(b+c-d)+a^2b(c+d-a)-a^2c(d+a+b)
(a-b)^3-2ab(a-b)
=(a-b)[(a-b)²-2ab]
=(a-b)(a²-4ab+b²)
x(x+y)(x-y)-x(x+y)^2
=(x+y)(x²-xy-x²-xy)
=-2xy(x+y)
a^2(x-2a)^2-a(2a-x)^2
=a(x-2a)²(a-1)
(b+c)x+(c+a)x+(a+b)x
=x(2a+2b+2c)
=2x(a+b+c)
a^3(b+c-d)+a^2b(c+d-a)-a^2c(d+a+b)
=a²(ab+ac-ad+bc+bd-ab-dc-ac-bc)
=a²(-ad+bd)
=a²d(b-a)

可用提取公因式来做

x -4y +x-2y =(x-2y)(x+2y)+(x-2y) =(x-2y)(x+2y+1) x^2(a+b-c)-2(c-b-a) =x (a+b-c)+2(a+b-c) =(a+b-c)(x +

(2a+b)(2a-3b)+3a(2a+b)和x(x+y)(x-y)-x(x+y)²4a(x+y)-6x-6y和啊a(a-b)-ab+b² x平方+2(a+b)x-(3a平方-10ab+3b平方)因式分解 计算:(1)(1+1/x-1)÷(x/x-1)(2)x^2-4x+4/x^2-4÷ x^2-2x/x+2(3)(a/ab-b^2-b/a^2-ab)÷(1+a^2+b^2/2ab)(4)(2a-b/a+b - b/a-b)÷a-2b/a-b)(5)a^2-b^2/a^2-ab÷(a+2ab+b^2/a)各位大神帮帮忙呢~ 如果(x+a)(x+b)=x的2次方+3x-4,求(a+b)-ab的值 x∧2+(a+b)x+ab=? 化简求值 1/1-x+1/1+x+1/1+x 其中x=2 a-b/a+ab÷1/ab-a^4÷1/ab-a×1/(a-b) 其中a=3 b=-2 化简ab-(a-2x)*(b-x) 化简 ab-(a-2x)-(b-x) 几道因式分解题 -a(a-x)(x-b)+ab(a-x)(b-x)的公因式是() A.-a B.-a(a-x)(x-b) C.a(a-x) D.a(x-a)-8a^3b²+12ab^3c-6a²b(x²-2x)(x²-2x+2)+1(2a²+7a+2)²-16 这题能用十字相乘 因式分解:-6a^3b^2 4ab^3c-2a^2b(x-y)^2-x+y25(a+b)^2-4(a-b)^2a^5b-ab^5x^2-10x+253a^2-6a^2b+2ab3x(a-b)-6y(b-a)(x^2+4)^2-16x^2 关于X的方程a(a-4)x-b(b-6)=9-4x有无数解,求{a-4ab/(a+b)}/{a/(a+b)-b/(b-a)-2ab/(a平方-b平方)}的值. 计算(a-b/ab)^2*(-a/b-a)^3*(a^2-b^2) 快 急还有一题 (x-1/x^2-x-2)^2÷(x^2-2x+1)/(2-x )÷(1/x^2+x)^2 求关于x的方程a(x+b)=2x+ab+b² (a+2x)b-a=(b+2)x+ab 求x^2-2(a+b)x-ab(a-2)(b-2)的因式分解 化简:x^2/x-1-x-1=() 化简:(ab+b^2)/1/a+b=() 计算(a/a-b+b/b-a) x^2-y^2 x^2-2xy+y^2的公因式是 因式分解:-10x^3-6x^2+2x=m(a-b)^3+n(b-a)^2=4x^2-9y^2=(a+b)^2-4(a-b)^2=(a-b)(a^2-ab+b^2)-ab(b-a)=(a-b)(a^2-ab+b^2)+ab(b-a)=(a+b)^2-81(a-b)^2=-a^2-18a-81=-1+81x^4=因式分解(这三到要过程)x(x+y)(x-y)-x(x 1.[a/(ab-b²)-b/(a²-ab)]÷[1+(a²+b²)/2ab],其中a=-1+根号3,b=-1-根号32.解关于x的方程:(x+1)/(a+b)+(x-1)/(a-b)=2a/(a²-b²) (a≠0)3.已知A·B=2x+8,A=3x/(x-2)-x/(x+2),求B