Question

TOPIC: Indices and logarithms.
Simplify 3^n+2 - 5(3^n) - 6 (3^n-1)

Answer 1

Hi :3

Answer 2

5*3^n

Answer 3

I assume your question is like this
3^(n+2) - 5(3^n) - 6 [3^(n-1)]
Then,
3^(n+2) - 5(3^n) - 6 [3^(n-1)]
= (3^2)3^(n) - 5(3^n) - 6(3^-1) 3^(n)
= 9(3^n) - 5(3^n) - 2(3^n)
=2(3^n)

Answer 4

thanks, you're a big helper.

Answer 5

welcome :) but i'm not a 'big' helper, I'm just a mini one :)

Answer 6

ahah, okay