Answer:
s = -4 ± √31
Step-by-step explanation:
Given 4[tex]s^{2}[/tex] + 32s = 60
divide by 4 throughout
[tex]s^{2} + 8s = 15\\s^{2} + 8s + (\frac{8}{2}) ^{2} = 15 + (\frac{8}{2}) ^{2}[/tex]
[tex](s + 4)^{2} = 31\\s + 4 = \sqrt{31}[/tex]
s = -4 ± √31
