> 数学 >
分式混合运算:a-1分之a+1-a²-2a+1分之a除以a分之1
人气:465 ℃ 时间:2019-10-11 01:17:50
解答
=(a+1)/(a-1)-a/(a-1)²×a
=(a+1)(a-1)/(a-1)²-a²/(a-1)²
=(a²-1-a²)/(a-1)²
=-1/(a²-2a+1)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版