「(x²+y²)-(x-y)²+2y(x-y)」÷4y,其中2x-y=18
「(x²+y²)-(x-y)²+2y(x-y)」÷4y,其中2x-y=18
(x+y)²-2(x²-y²)+(y-x)²
(3x-2y)²(3x-2y)²(9x²+4y²)²
化简再求值[(x²+y²)²-4x²y²]÷(x²-y&su
化简:1.2x²-y²+(2y²-3x²)-(2y²+x²)
已知2x-y=10 【(x²+y²)-(x-y)²+2y(x-y)】÷4y 过程
2x-y=10 【(x²+y²)-(x-y)²+2y(x-y)】÷4y
2x-y=2,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y
1、x²+4y²+_______=(x-2y)²
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y
(x²+4y²)²-16x²y² 因式分解
[(x+2y)²-(x+y)(3x-y)-5y²]÷(2x),其中x,y满足x²+4x+y