Answer
$50$
Work Step by Step
We are given: $x=-3$, $y=4$, $z=6$
We take into account the order of operations:
Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction
Thus, we have:$$ \frac{(7-x)^2}{z-y} =\frac{(7-(-3))^2}{6-4}\\
=\frac{10^2}{2}=\frac{100}{2}=50
.$$
