Which point is an x-intercept of the quadratic function f(x) = (x – 4)(x + 2)?

x=4,  x=-2

Step-by-step explanation:

f(x) = (x – 4)(x + 2)

To find the x intercepts, set f(x) = 0

0  = (x – 4)(x + 2)

Using the zero product property

x-4 = 0  and x+2 = 0

x-4+4 = 0+4     x+2-2 = 0-2

x=4 and x=-2

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get