因式分解:x的2次方-y的2次方-4x-4y

问题描述:

因式分解:x的2次方-y的2次方-4x-4y

(x+y)(x-y)-4(x+y)
=(x+y)(x-y-4)

如果我的回答对您有帮助,请点击下面的“选为满意回答”按钮,谢谢您!

(x-2)^2=(y-2)^2

(X+Y)(X-Y-4)

原式=(x+y)(x-y)-4(x+y)
=(x+y)(x-y-4)

x的2次方-y的2次方-4x-4y
=(x+y)(x-y)-4(x+y)
=(x+y)(x-y-4)