> 数学 >
y/5x² * (-x/y)
人气:276 ℃ 时间:2020-04-14 18:04:27
解答
y/5x² * (-x/y)
=-(y/y)(x/5x²)
=-1/(5x)y/5x² * (-x/y) =-(y/y)(x/5x²)这一步怎么来的乘法交换律
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版