Question

What are the zeros in the function f(x)=(2x+6)(x-4)

Answer 1

Hello from MrBillDoesMath!

Answer:

x = -3, 4

Discussion:

The zeroes of f(x) are the x values where

2x + 6 = 0 => x = -3

and

x - 4 = 0 => x = 4

Thank you,

MrB

Answer 2

(4,0) and (-3,0)

Explanation:

Either 2x + 6 = 0 or x - 4 = 0. Solve both of these to get possible values for x

2x +6 =0 Subtract 6 from both sides.

2x + 6 - 6 = 0 - 6

2x = - 6 Divide by 2

2x/2 = -6/2

x = - 3

====================

x - 4 = 0 Add 4 to both sides

x - 4 + 4 = 0 + 4

x = 4

So the two zero points are

(4,0) and (-3,0)