Question

Which point is an x-interceptof the quadratic function f(x)=x-4)(x+2)

Answer 1

The x intercepts are -2 ,4

Explanation:

f(x)=(x-4)(x+2)

We set the function equal to 0 to determine the x intercepts

0 = (x-4)(x+2)

Using the zero product property

0 = x-4 0 = x+2

x=4 x=-2

The x intercepts are -2 ,4