Question

如果2的m次方=5,2的n次方=3(1)求2的m+2n次方的值(2)求8的m次方的值

Answer 1

(1)求2的m+2n次方的值
=2的m次方×2的2n次方
=2的m次方×（2的n次方)²
=5×3²
=45
(2)求8的m次方的值
=（2³)的m次方
=(2的m次方)³
=125