100分!1.a-b/b * ab/2a-2b2.xy/2x-3y * 6x-9y/2x^2y^2今晚就要!100分啊!
100分!1.a-b/b * ab/2a-2b2.xy/2x-3y * 6x-9y/2x^2y^2今晚就要!100分啊!
x²(x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3
3a-3b/10ab*25a^b3/a^-b^= x^-4y^/x^+2xy+y^/x+2y/2x^+2xy
分式的通分和约分,1、9a+6ab+b^2/3a+62、x^2-36/2x+12这2个是通分1、x-y/2x+2y与xy
初一因式分解和计算分利用乘法公式计算1.(a^2-ab-b^2)(a^2+ab-b^2)2.(x^2y+2xy^2)(3
已知:A=X*X-3xy+y*y,B=2x*x+xy-3y*3y.求A+B,A-B,A+2B
easy的 分解因式(a-b)(x-y)+2(b-a)(x+y)白送分了
1.设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,
分解因式1.2a(x-y)-3b(y-x)2.-x^y-2xy+35y3.a^(x-y)-4b^(x-y)若|a+2|+
1.设A=2x²-3xy+y²+x-3y,B=4x²-6xy+2y²+4x-y,
几道因式分解..4ab(a+b)^2-6a^2b(a+b)(x+y)^2(x-y)+(x+y)(x-y)^22a(a-3
(x-A)*(B-y)=x^2-9xy+8y^2,求A,B