化简:√12x³y^5
化简(x+y)-(2x+y/2)-(3x+y/6)-(4x+y/12)-(5x+y/20)-……-(10x+y/90)
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
化简1) (-2x^ y^)(3x^ y^)(-4x^ y^)2) (6√x)\(3√x√x^5)3)已知函数f(x)的
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
将(√x-y)/(x-y)÷√(xy/x³-x²y)(x>y>0)化简
化简:[(x+2y)^2-(x+y)(3x-y)-5y^2]/2x
2x²+1/2y²-2x-3y+5=0,求(2x√9x-y²√x/y³)-(√1
化简(x-2y)平方-(2x-y)(-2x-y)+(x-5y)(x+2y)
计算6√3x²y³*3√12x四次方/y(x>0,y>0)
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
已知(√x-y-4)+|x-2y-5|=0,则√x+y²=____.³√x²-y²
化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x