因式分解(x2-y2)(x+y)-(x-y)?
3x2+(-3/2x+1/3y2)(2x-3y)因式分解步骤
我做对了吗.x2(x-y)+y2(y-x)= x2(x-y)-y2(x-y)=x2-y2=(x+y)(x-y)
x2 (x+y+z+xyz)因式分解
利用因式分解求x+3y=125(x≠y)时,(x2+2xy-3y2)÷(x-y)的值.
因式分解 x2+xy-2y2-x+7y-6
2x2+xy-3y2+x+4y-1因式分解
x2-xy-2y2-x+5y-2因式分解
因式分解:x3+(y-1)x2-2xy-y2
因式分解:(1)x2-3xy-10y2+x+9y-2;(2)x3-11x2+31x-21.
因式分解:(xy-x2)3-x3(y-x).
已知x,y为实数,且(x2 +y2)(x2 +y2+2)=3.求x2 +y2的值
已知实数x.y满足(x2+y2)(x2+y2-1)=2,求x2+y2的值