Find the value of $m^{2} + 5 m - 5$ when $m = - 2$

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Solution

Let $f (m) = m^{2} + 5 m - 5$
$f (- 2) = {(- 2)}^{2} + 5 \times - 2 - 5$
$= 4 - 10 - 5 = - 11$

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