问题
解答题
若3m=9,3n=3,求3m+n,32m+3n的值.
答案
∵3m=9,3n=3,
∴3m+n=3m?3n=9×3=27,
32m+3n=32m?33n
=(3m)2?(3n)3
=92×33
=81×27
=2187.
若3m=9,3n=3,求3m+n,32m+3n的值.
∵3m=9,3n=3,
∴3m+n=3m?3n=9×3=27,
32m+3n=32m?33n
=(3m)2?(3n)3
=92×33
=81×27
=2187.