Question

What are the x-intercepts of the graph of the quadratic function f(x) = 3(x − 1)(x + 3)?

Answer 1

x=1 and x=-3

Explanation:

x-1=0 ---> x=1

x+3=0 ---> x=-3

Answer 2

-3, 1

Explanation:

f(x) = 3(x − 1)(x + 3)

To find the x intercepts, set the equation equal to zero

0 = 3(x − 1)(x + 3)

Using the zero product property

x-1 = 0 x+3 =0

x=1 x=-3