已知X的m次方=3,X的n次方=2,求X的3m+2n次方、X的3m-2n次方的值

2025-01-02 09:36:00
推荐回答(3个)
回答1:

x的m次方的3次方等于27,x的n次方的2次方等于4,左右两边同时相除既得x的3m-2n次方等于四分之二十七

回答2:

X的3m+2n次方=﹙X的3m次方﹚·﹙X的2n次方﹚=﹙X的m次方﹚³·﹙X的n次方﹚²=3³×2²=108
X的3m-2n次方=﹙X的3m次方﹚÷﹙X的2n次方﹚=﹙X的m次方﹚³÷﹙X的n次方﹚²=3³÷2²=27/4

回答3:

x^(3m+2n)
=(x^m)^3*(x^n)^2
=3^3*2^2
=27x4
=108
x^(3m-2n)
=(x^m)^3÷(x^n)^2
=3^3÷2^2
=27/4