因式分解:-1/4x^2+1/3xy-1/9y^2
y^3+xy^2+2xy+x^2-1 因式分解
2x2+xy-3y2+x+4y-1因式分解
(xy-x-y+1)^2因式分解
因式分解(x+y)^3+2xy(1-xx-y)-1
2x²-xy+3x-y+1因式分解
因式分解xy²-2xy+x+2y-1
因式分解4x^2y^2-xy-1
x^2+4y^2+xy-1 因式分解
x^2+y^2-x-y-xy+1如何因式分解
因式分解(x+y)^3+2xy-2x^2y-2xy^2-1
化简&因式分解化简:898*902+4因式分解:1)x∧2+2xy+y∧2-x-y2)3x∧2y-6xy+3y
因式分解:27x^3+9x^2y+xy^2+(1/27)y^3