√(x³-x²y+1/4y²) - √(1/4x³-x²y+xy
多项式因式分解 1,(x-y)³-(x-y)²(x+y) 2,x(x²-xy)-(4x
x²+xy/(x-4y)(x+y),其中x=4,y=-1
【分解因式】 x²-xy+4分之1y² x²y-2xy²+y³ a(x
x四次方+x³-3x²-4x-4 x(x-1)+y(y+1)-2xy (x-2)³-(y-
已知2X-3√xy-2y=0(x>0)求2x²+xy-9y²分之x²+4xy-16y
x⁴+4x³y+6x²y²+4xy³+y⁴=( )
4/X+1/Y=2,XY=-1,求代数式4Y-X/X-2Y/(x+2y-12Y²/x-2y)的值
已知x+y=4,xy=1,试分别求出x²-y²+8y和x³y+xy³的值
已知x+y=5,xy=3,x³+y³=(x+y)(x²-xy+y²),则1/x&
分解因式计算6x³y(x-y)³-4xy³(y-x)²
一.x-y=2,则x²-2xy+y²= 二.x-y=-1,xy=3,则x³y-2x
计算[(x²-y²)/y]²÷(x²+xy)³·(xy/y-x)