已知5^x=2,5^y=3,求5^3x+2y的值

问题描述:

已知5^x=2,5^y=3,求5^3x+2y的值


5^x=2
5^y=3
5^(3x+2y)
=5^3x×5^2y
=(5^x)³×(5^y)²
=8×9
=72