Question

If $y=5,z=2$, evaluate
(iii) $5y^2$.

Answer 1

Given : $5y^2$

Substituting $y=5,z=2$ , in the given expression

$5y^2=5\times (5{)}^2$

$=5\times 25$

$=125$

Hence, the value of $5y^2$ for $y=5,z=2$ is $125$.