Answer:
s = 5, s = 9
Step-by-step explanation:
To factor the quadratic
Consider the factors of the constant term (45) which sum to give the coefficient of the s- term (- 14)
The factors are - 9 and - 5
since - 9 × - 5 = + 45 and - 9 - 5 = - 14, hence
s² - 14s + 45 = 0
(s - 9)(s - 5) = 0
Equate each factor to zero and solve for s
s - 9 = 0 ⇒ s = 9
s - 5 = 0 ⇒ s = 5
