已知4x+3y-2=0,求27的y次方乘81的x次方的值
问题描述:
已知4x+3y-2=0,求27的y次方乘81的x次方的值
答
4x+3y-2=0
4x+3y=2
27的y次方乘81的x次方
=81^x×27^y
=3^4x×3^3y
=3^(4x+3y)
=3^2
=9^是啥意思几次方的意思