Question 1:

(3^a+1 9^a+2 27^a) / (3^a-1 9^a 27^a+1) = ?

A. 3

B. 9

C. 27

Feedback (3^a+1 9^a+2 27^a) / (3^a-1 9^a 27^a+1) = [3^a+1 3^2(a+2) (3³)^a] / [3^a-1 (3²)^a (3³)^a+1] = 3^6a+5 / 3^6a+2 = 3³ = 27.

D. 1

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