Math, asked by prytyk13, 1 year ago

$factoriseb^{2} -40b+280$

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Answered by Anonymous

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${b}^{2} - 40b + 280 \\ = by \: using \: middle \: term \: spirit \\ b^{2} - ( - 25 - 15) \: + 280 \\ (b - 25) \: (b - 15)$

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