Answer
1/2
Work Step by Step
1. Substitute values of p, q, and r into numerator of equation.
-(8 - 6)^{2} - 2(-4)
First solve parentheses, then exponents, then multiply, then subtract.
-(2)^{2} - 2(-4) = -4 - 2(-4) = -4 + 8 = 4
2. Substitute values of p, q, and r into denominator of equation and solve.
4 - (-4) = 8
3. Divide numerator by denominator.
4/8 = 1/2
