a-2+4⼀(a+2)化简?

2025-06-27 01:18:46
推荐回答(1个)
回答1:

=(a-2)(a+2)/(a-2 ) + 4/(a+2)
=(a²-4)/(a+2)+4/(a+2)
=(a²-4+4)/(a+2)
=a²/(a+2)