Solve: a^4-1 / b^4 - Vidyadip

Question

Solve:
$a^4-1 / b^4$

✓

Answer

$a^4-1 / b^4$
$=\left(a^2\right)^2-1 /\left(b^2\right)^2$
$=a^2-1 / b^2 a^2+1 / b^2$
$=a-1 / b a+1 / b a^2+1 / b^2$

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