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Factorisation by Common Factors

Factorize the...

Question

Factorize the polynomial:
$m^{2} - 21 m - 72$

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Solution

$m^{2} - 21 m - 72 = m^{2} - 24 m + 3 m - 72 = (m - 24) (m + 3)$
factors are $(m - 24), (m + 3)$

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Factorisation by Common Factors

Standard VIII Mathematics

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