Answer
$25a^{9}$
Work Step by Step
Step 1: $\frac{(5a^{7})^{2}}{a^{5}}$
Step 2: $\frac{(5)^{2}(a^{7})^{2}}{a^{5}}$
Step 3: $\frac{25a^{14}}{a^{5}}$
Step 4: $\frac{25a^{14-5}}{1}$
Step 5: $25a^{9}$
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