Q. Simplify. Express your answer using a single exponent.(9r9)2
Apply power rule: Apply the power of a power rule to the expression (9r9)2. The power of a power rule states that (am)n=am∗n. Therefore, we need to apply this rule to both the numerical part and the variable part of the expression. (9r9)2=92×(r9)2
Calculate 92: Calculate 92. 92=9×9=81
Apply power rule to (r9)2: Apply the power of a power rule to (r9)2.(r9)2=r(9∗2)=r18
Combine results: Combine the results from Step 2 and Step 3.The simplified expression is 81×r18.
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