分解因式x^2-6xy+9y^2-2x+6y=
问题描述:
分解因式x^2-6xy+9y^2-2x+6y=
答
原式=(x-3y)^2-2x+6y
=(x-3y)^2-2(x-3y)
=(x-3y)(x-3y-2)
答
x^2-6xy+9y^2-2x+6y=(x-3y)^2-2(x-3y)=(x-3y)(x-3y-2)
答
x^2-6xy+9y^2-2x+6y
=(x^2-6xy+9y^2)-(2x-6y)
=(x-3y)^3-2(x-3y)
=(x-3y)(x-3y-2)