What are the zeros of the function f (x) = (x+5) (2x-8) ?

Question

Mathematics

Double Double

12 May, 17:10

What are the zeros of the function f (x) = (x+5) (2x-8) ?

+1

Answers (2)

Know the Answer?

Iliana Lowery · Answer 1

X = - 5 or x = 4

Step-by-step explanation:

F (x) = (x+5) (2x-8)

When f (x) = 0

0 = (x+5) (2x-8)

Thus;

x+5 = 0 or 2x-8 = 0

Therefore; x = - 5 or x = 4

Ronald Newman · Answer 2

x = - 5, x = 4

Step-by-step explanation:

To find the zeros set f (x) = 0, that is

(x + 5) (2x - 8) = 0

Equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

2x - 8 = 0 ⇒ 2x = 8 ⇒ x = 4