4(x+y)²-20(x+y)+25
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
(x-2y)²+(2x-4y)(x+y)+(x+y)²
4(x+y)^2-20(x-y)+25
因式分解:25(x+y)²-9(x-y)²;(x+y)²-4(x+y-1).
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
4(x+y)-20(x+y)+25
若|x+2y-1|+y²+4y+4=0,求(2x-y)²-2(2x-y)(x+2y)+(x+2y)&
(3x-y)²-2x(4x-5y)-(x+2y)²
4(x+y)²-20(x+y)+25因式分解求完整过程
4(x+y)² -20(x+y)+25 分解因式