Factorise the following expressions. 3 p q r-6 p^2 q^2 r^2-15 r^2 - Vidyadip

Question

Factorise the following expressions.
$ 3 p q r-6 p^2 q^2 r^2-15 r^2 $

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Answer

$ 3 p q r-6 p^2 q^2 r^2-15 r^2 $
$ 3 p q r-3 \times 2 p^2 q^2 r^2-3 \times 5 r^2 $
$ =3 r\left(p q-2 p^2 q^2 r-5 r\right) $

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