化简:(y/2x²)³÷(-y²/4x)²
化简:(2x-y)²-4(x-y)(x+y)
化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
(2x-y)²-4(x-y)(x+2y)
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
已知x²-y²=10,求[(x+y)³-2y(x+y)²-4(x+y)]÷(x+
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
1.化简:x²-4y²/x²+y²+2xy÷2y+x/x²+xy.
化简 3(X-Y)²-4(X-Y)+7(X-Y)-6(X-Y)²
(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
化简:[(x+y)²-(x-y)²]÷2xy