已知x=4,y=1/8,求代数式1/7xy²×14(xy)²×1/4x的5次方,
问题描述:
已知x=4,y=1/8,求代数式1/7xy²×14(xy)²×1/4x的5次方,
答
1/7xy²×14(xy)²×1/4x的5次方
=1/2x的8次方y的4次方
=1/2(x²y)的4次方
=1/2(4²×1/8)的4次方
=8