(x+2)(x+4)+x눀-4用因式分解怎么做呀!

2025-06-21 02:00:07
推荐回答(1个)
回答1:

(x+2)(x+4)+x²-4
=(x+2)(x+4)+(x+2)(x-2)
=(x+2)(x+4+x-2)
=(x+2)(2x+2)
=2(x+2)(x+1)