计算:3x³-3x²-y²+5y+x²-5y+y²
计算:(x+2y)(3x-5y)-(6x的四次方y²-2x²y²)÷(2x²y&
计算:(x-y)的5次方(x-y)²(x-y)³
(x-y)·2(x-y)²·3(x-y)³ 计算
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
计算3x[xy-2x(1/y-x/3]+3y(x²-y²)
四分之一(x+y)²-3(x-y)³+二分之一(x+y)²-5(x-y)³
5(x+y)²-3(x+y)³+(y+x)²-8(y+x)³ 怎么样求解这样的多
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
合并同类项:-6x²y-x+5x²y-2x+x³y+3x
5x[x-3y]²+2y[3y-x]³因式分解,
(x+y)²+4(x+y)-5