> 数学 >
2x-3/x+3-2x/5怎么做
人气:435 ℃ 时间:2020-04-29 08:41:50
解答
(2x-3)/(x+3)-2x/5
=[5(2x-3)-2x(x+3)]/5(x+3)
=(10x-15-2x²-6x)/5(x+3)
=(-2x²+4x-15)/5(x+3)
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版