求(x²+2xy+y²)(x²-xy+y²)²要详细过程
(x-y)/(2x+2y)与(xy)/(x+y)²通分要过程
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
计算:(xy-x²)×x-y/xy
x²/xy-x/y
求代数式2x²-4xy+5y²-12y+13的最小值的详细过程讲解
3y/2x+2y + 2xy/x²+xy等于多少过程
分式除法(2y-x)÷x²-4xy+4y²/x+3xy要过程
已知x:y=3:2,求(x²+3xy)/(xy+2xy)
已知x²-x-2xy+y+y²,求代数式½(x²+y²)-xy的值
计算:x²+2xy+y²/xy-y².x²-2xy+y²/xy+y
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
求3x²y-2xy²+2(xy-二分之三x²y)-xy+3xy²的值,其中x=3