Multiply the following: -7 p q^2 r^3,-13 p^3 q^2 r - Vidyadip

Question

Multiply the following:
$ -7 p q^2 r^3,-13 p^3 q^2 r $

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Answer

$-7 p q^2 r^3,-13 p^3 q^2 r $
$ \left(-7 p q^2 r^3\right) \times\left(-13 p^3 q^2 r\right) $
$ =(-7) \times(-13) p^4 q^4 r^4 $
$ =91 p^4 q^4 r^4 $

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