If $m = - 2,$ then find the value of
$m^{2} + 6 m .$

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Solution

$Given: m^{2} + 6 m$

Substituting the value of $m$ in the above expression, we get
$m^{2} + 6 m = (- 2)^{2} + 6 (- 2)$
$= 4 - 12 = - 8$

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