Factorise: 8-4 a-2 a^3+a^4 - Vidyadip

Question

Factorise:
$8-4 a-2 a^3+a^4$

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Answer

$8-4 a-2 a^3+a^4$
$=4(2-a)-a^3(2-a)$
$=(2-a)\left(4-a^3\right)$

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