化简;6(a-b)(x-y)²-3(b-a)(x-y)^4
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
A.A+(4X+3Y)B.A+(4X+6Y) C.A+2(
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
A={y|y=-4x+6},B={x|y=5x-3},求A∩B.
化简题.化简,(a^-3b^4)^2乘(3a^2b)^-2.(x+y)乘x^2/x^2-y^2+y^2/y-x.y-3/
(x-y)³-x+y (a+b)²-(a-b)² (x-3)³-4x+12
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
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
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|+