Question

If $m=3$ and $n=7$, evaluate :

iv) $4n^2$

Answer 1

Step: Evaluate

Given: $4n^2$
Substituting $n=7$ in the given expression
$4n^2=4\times 7^2$
$=4\times 49$
$=196$

Hence, the value of $4n^2$ for $m=3$ and $n=7$ is $196$.