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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