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Expansion of (a ± b ± c)²

Factorize: 1...

Question

Factorize: $15 - 8 x - 16 x^{2}$

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Solution

given, $15 - 8 x - 16 x^{2}$

$= 15 - 20 x + 12 x - 16 x^{2}$

$= 5 (3 - 4 x) + 4 x (3 - 4 x)$

$= (3 - 4 x) (5 + 4 x)$

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