Question

What are the zeros of the polynomial function? f(x)=x2−4x−60

Answer 1

x = -6, x = 10

Explanation:

To find the zeros equate f(x) to zero, that is

x² - 4x - 60 = 0 ← factorise

(x - 10)(x + 6) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 10 = 0 ⇒ x = 10

x + 6 = 0 ⇒ x = - 6