Question

已知2的x次方等于3 4的y次方等于5 求2的x加4y方的值 无

Answer 1

2^x=3
4^y=5
2^(x+4y^2)
=2^x*2^(4y^2)
=3*2^(2y)^2
=3*(4^y)^2
=3*5^2
=75