Question

Evaluate the expression when y=30 and z=6 .y + z^2/y - 4z

Answer 1

$\begin{gathered} \frac{\left(y+z^2\right)}{(y-4z)} \\ \frac{(30+(6)^2)}{(30\text{ -}4(6))} \\ \frac{(30+36)}{30\text{ -}24} \\ \frac{66}{6} \\ =\text{ 11} \end{gathered}$

The answer is 11.