)=(4x+2y)(2x-4y)=4(2x+y)(x-2y)这是为什么?我感觉公因式应该是2吖...

)=(4x+2y)(2x-4y)=4(2x+y)(x-2y)这是为什么?我感觉公因式应该是2吖... 多项式4x(y+1)^2+8x(y+1）的公因式是 关于提公因式x(3-x)(4-y)-y(x-3)(y-4) 说明哪个是公因式,一步步写下计算过程8m^2n+2mn 同上 多项式:x^4-y^4,x^4+2x^2y^2+y^4,x^3y+xy^3的公因式是( ) 因式分解 提公因式法 x(x+y)(x-y)-2x(x+y)的平方 {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 已知4x=9y求(1)x+y/y (2)y-x/2x x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20 {(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20 3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27 4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6 (x+y)(x+2y)(x+3y)(x+4y)=-40