Asked by richard

3^(n+1)-3^(n-2)

Need help simplifying this please.

Answers

Answered by bobpursley
because multiplication of powers results in adding exponents, one can reduce this to

3^n*3^1 - 3^n*3^-2

3^n * (3-1/9)=3^n (2 8/9)
Answered by mara
still don't really quite understand. could you explain your process a bit more?
Answered by Ms. Sue
Mara -- why are you butting in to richard's question?
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