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Factorisation by Common Factors

Factorise 5...

Question

Factorise
${5 b}^{2} - 6 b + 1$

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Solution

$5 b^{2} - 6 b + 1$
$= 5 b^{2} - 5 b - b + 1$
$= 5 b (b - 1) - (b - 1)$
$= (5 b - 1) (b - 1)$

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