Question

谢谢，因式分解

x^2-6xy+9y^2-3x=9y

Answer 1

x²-6xy+9y²-3x=9y
x²-6xy+9y²-3x-9y=0
（x-3y）²-3（x+3y）=0

Answer 2

x^2-6xy+9y^2-3x+9y
=(x-3y)²-3(x-3y)
=(x-3y)(x-3y-3)