Question

${5}^{3} + {5}^{4}$
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Answer 1

The Question in the pic

${3}^{ - 5} + {3}^{ - 5} = 2 \times {3}^{ - 5} \\ \: \: \: \: \: \: \: \: \: = 2 \times \frac{1}{ {3}^{5} } \\ \\ \: \: \: \: \: \: \: \: = \frac{2}{243} \\ \\ \\ another \\ {5}^{3} + {5}^{4} \\ \\ = {5}^{3} (1 + 5) \\ \\ = 125 \times6 \\ \\ = 750$

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