Question

If the solutions to a quadratic equation are x = 8 and x = -2, what are two possible factors of the equation?

Select all that apply.

(x + 8)
(x + 2)
(x - 8)
(x - 2)

Answer 1

It’s the 2 and 4 since :
1) x+8=0
x=-8
Not correct

2) x+2
x=-2
correct

3) x-8=0
x=8
The answer we’re looking for

4) x=-2
X=2
Not correct

Answer 2

x - 8

x + 2

Explanation:

if x = 8 and x = -2 are factors

then we can write it as x = 8

x - 8 = 0

x = -2

x + 2 = 0

then quadratic equation becomes (x - 8) (x + 2) = 0