Question

a
$a4 - a2b2 + b4$
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Answer 1

Answer:

$= {a}^{4} + {b}^{4} - 2 {a}^{2} {b}^{2} + {a}^{2} {b}^{2}$

$= { ({a}^{2} - {b}^{2}})^{2} + {a}^{2} {b}^{2}$