把下列各式分解因式1)x^2-9y^2减2x加6y

把下列各式分解因式1)x^2-9y^2减2x加6y
2024-11-23 02:37:23
推荐回答(3个)
回答1:

把下列各式分解因式
1)
x^2-9y^2减2x加6y

=(x²-2x+1)-(9y²-6y+1)
=(x-1)²-(3y-1)²
=(x-1+3y-1)(x-1-3y+1)
=(x+3y-2)(x-3y)

回答2:

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

回答3:

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