Question

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

ii) $5m{n}^2$

Answer 1

Step: Evaluate

Given: $5m{n}^2$
Substituting $m=3$ and $n=7$ in the given expression
$5m{n}^2=5\times 3\times 7^2$
$=5\times 3\times 49$
$=735$

Hence, the value of $5m{n}^2$ for $m=3$ and $n=7$ is $735$.