Question

Find the zeros of the polynomial function.



f(x) = x^2 – 4x – 60









A.

–14, 5








B.

–5, 14








C.

–6, 10








D.

–10, 6

Answer 1

x^2 – 4x – 60 = x^2 - 10x + 6x - 60 = x(x-10) + 6(x-10) =
(x-10)(x+6)
To find the zeros of the polynomial, equate it to zero and solve for x:
(x-10)(x+6) = 0
x = 10 or -6. So C is the correct answer.