(-y)的-5次方÷y的4次方的多少?
问题描述:
(-y)的-5次方÷y的4次方的多少?
答
=-(1/y的5次方·y的四次方)
=-1/y
(-y)的-5次方÷y的4次方的多少?
=-(1/y的5次方·y的四次方)
=-1/y