10的3m+2n次方=(10的m次方)的3次方×(10的n次方)的平方=4的3次方×5的2次方=1600
10^m =410^n =510^(3m+2n) =10^3m × 10^2n =4^3 ×5^2 =1600
10^(3m+2n) = (10^m)^3 * (10^n)^2 = 4^3 * 5^2 = 1600
等于1600