Question

${a}^{ - 3} . {b}^{ - 5} \div {a}^{ - 2}. {b}^{ - 6}$
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Answer 1

$a {}^{ - 3} \times {b}^{ - 5} \div a {}^{ - 2} \times b {}^{ - 6} \\ \\ = {a}^{ - 1} \times b = \frac{b}{a}$

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