因式分解1、(x-y)(a-b)-(y-x)(2a-3b) 2、-2x²y-4xy²-(3³
因式分解2x²y-xy-3y (-a+b)+c²(a-b)
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
因式分解:(1)(a+b)²+a+b+1/4 (2)6(x-y)²+3(y-x)³
x²(x+y)(y-x)-xy(x+y)(x-y) 已知a+b=4,ab=-2,求多项式3a²b+3
因式分解:x^3(a+1)-xy(x-y)(a-b)+y^3(b+1)
A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y,若x=
设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若x
数学多项式因式分解1.(a-b)^3-(a-b) 2.x^2-2xy+y^2-9 3.(x^2+y^2)^2-4x^2y
因式分解(1)4x^4-4x^2y^2+y^4+xy^3(2)a^2-b^2-x^2+y^2-2ay+2bx
因式分解 16(a-b)^2-(a+b)^2 x^2+xy+1/4y^2 利用十字相乘发因式分解 2x^2-7x+3 6
因式分解(x-y)^2+4(x^2-y^2)+4(x+y)^2 a(x^2+2xy+y^2)-b(x^2-y^2) (x
已知:6x²-7xy-3y²+14x+y+a=(2x-3y+b)(3x+y+1)求a,b的值