Question

Simplify this expression (3)^10 (3)^-9

Answer 1

3

Explanation:

First, simplify the powers.

(3)^-9 = (1)/(3^9)

Multiply across.

(3^10) x 1 = 3^10

(3^10)/(3^9)

Note that when you divide power signs, as long as the base is the same, you can subtract the power sign.

(3^10)/(3^9) = 3^(10 - 9) = 3^1 = 3

3 is your answer.

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