Solve: p^2 q^2-p^4 q^4 - Vidyadip

Question

Solve:
$ p^2 q^2-p^4 q^4 $

✓

Answer

$ p^2 q^2-p^4 q^4 $
$ =p^2 q^2\left(1-p^2 q^2\right) $
$ =p^2 q^2\left[1-(p q)^2\right] $
$ =p^2 q^2(1-p q)(1+p q) $

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