Question

已知：2的m次方=a，2的n次方=b（m、n为正整数）则2的m次方+n次方=多少 要过程

Answer 1

2^(m+n) = 2^m2^n = ab

Answer 2

2的m次方+n次方=(2^m)*(2^n)=ab

Answer 3

2^(m+n)=2^m*2^n=ab