Question

救命!by rewriting each part of the expressions and then using

Answer 1

重写多项式,把它们简化了

又不是选择题,选什么A

a)

3^6 / 3^N

=3^(6-N)

b)

2^2n / 2^3 × 2^(n+1)/2^3

=2^(2n-3) × 2(n-2)

=2^(3n -5)

c)

5^2 / 5^(n+1) × 5^2n/5^3

=5^(1-n) × 5(2n - 3)

=5^(n-2)