Question
Divide $: − 21m^5n^7$ by $14m^2n^2$
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Answer
$-21 m^5 n^7 \div 14 m^2 n^2$
$=\frac{-3 \times 7 \times m^{5-2} n^{7-2}}{14}$
$=-\frac{3}{2} m^3 n^5$
$=\frac{-3 \times 7 \times m^{5-2} n^{7-2}}{14}$
$=-\frac{3}{2} m^3 n^5$
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