化简算式(4x-2y²)-[5x-(x-y²)]-x
化简算式(4x-2y²)-[5x-(x-y²)]-x
(3x-y)²-2x(4x-5y)-(x+2y)²
(x-2y)²+(2x-4y)(x+y)+(x+y)²
一、 化简求值1 (x-2-(12)/(x+2))/(4-x)/(x+2)2【(x-y)²+(x+y)(x-y
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
已知x,y为实数,且2(x+2y)=x²+y²+5求代数式3x-4y分之x²+y²
化简求值(x+5y)(x+4y)-(x-y)(x+y),其中x=一又2/5,y=-1/7
(2x-y)²-4(x-y)(x+2y)