求一道计算题,{(2\3x²)-(2\x²+y²)*[(x²+y²\3
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求一道计算题,
{(2\3x²)-(2\x²+y²)*[(x²+y²\3x²)-x²-y²)]}÷(x²-y²\x²)
{(2\3x²)-(2\x²+y²)*[(x²+y²\3x²)-x²-y²)]}÷(x²-y²\x²)
![求一道计算题,{(2\3x²)-(2\x²+y²)*[(x²+y²\3](/uploads/image/z/1785434-50-4.jpg?t=%E6%B1%82%E4%B8%80%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%98%2C%EF%BD%9B%EF%BC%882%5C3x%26sup2%3B%EF%BC%89-%EF%BC%882%5Cx%26sup2%3B%2By%26sup2%3B%29%2A%5B%28x%26sup2%3B%2By%26sup2%3B%5C3)
初二的?
求一道计算题,{(2\3x²)-(2\x²+y²)*[(x²+y²\3
化简:1.2x²-y²+(2y²-3x²)-(2y²+x²)
(3x-2y)²(3x-2y)²(9x²+4y²)²
计算:(1).(-2xy²)*(3x²y)²
有这样一道计算题:“计算(2x³-3x²y-2xy²)-(x³-2xy²
|x+2y+3|+(2x+y)²=0求x²-xy+y²
y=(x²+1)²/[(3x²+2)(2x²+3)],求最小值
已知x/y=3,求x²+2xy-3y²/x²-2xy+y²
已知x/y=3,求x²+2xy-3y²/x²-xy+y²的值
x/y=2,求分式x²-xy+3y²/x²+xy+6y²
(x+y)²-2(x²-y²)+(y-x)²
已知x²+y²-4x+6y+13=0,求x²+2y/x²-3y²的值