> 数学 >
计算,
(a²-1)/(a²+4a+4)÷(a+1)/(a+2)
人气:400 ℃ 时间:2020-05-14 06:54:27
解答
[(a²-1)/(a²+4a+4)]÷[(a+1)/(a+2)]
=[(a²-1)/(a+1)]/[(a²+4a+4)/(a+2)]
=(a-1)/(a+2)
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版