Answer:
Two zeros are 17 and -5
Step-by-step explanation:
Given:
f(x) = x² - 12x - 85
Find:
Zeros of the function
Computation:
f(x) = x² - 12x - 85
f(x) = x² - (17 - 5)x - 85
f(x) = x² - 17x + 5x - 85
f(x) = x(x - 17) + 5(x - 17)
f(x) = (x - 17) (x + 5)
So,
x - 17 = 0 , x + 5 = 0
So,
x = 17 , x = -5
Two zeros are 17 and -5
