Question
If $m = 2$, find the value of $3{m^2} - 2m - 7$.
Given that, for $m = 2$, we have to find a value of $3{m^2} - 2m - 7$.
Putting value of $m$, we get
$\Rightarrow 3{m^2} - 2m - 7 \\ \Rightarrow 3{\left( 2 \right)^2} - 2\left( 2 \right) - 7 \\ \Rightarrow 12 - 4 - 7 \\ \Rightarrow 1 \\$