若3x+2y-3=0,求8^x乘4^y

问题描述:

若3x+2y-3=0,求8^x乘4^y

8^x *4^y
=(2^3)^x * (2^2)^y
=2^3x *2^2y
=2^(3x+2y)
又3x+2y-3=0,3x+2y=3
所以8^x *4^y=2^3=8