7 to the power 1/2 × 7 to the power 3/2
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7^1/2 * 7^3/2 = ? this is what you actually asked.
so lets get started
= 7 ^ (1/2 + 3/2)
= 7 ^ (4/2)
= 7 ^ 2
= 7*7
= 49
you should be able understand the basic addition in fraction. then it is easy to understand the question.
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