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