What are the x-intercepts of the graph of the function f(x) = x + 5x - 36?

(-4,0) and (9, 0)
(4,0) and (-9.0)
(-3,0) and (12, 0)
(3, 0) and (-12, 0)

The x-intercepts are (4,0) and (-9,0)

Step-by-step explanation:

We want to find the x-intercepts of the function:

At x-intercept,

We split the middle term to obtain;

Factor by grouping:

Apply the zero product principle.

Hence the x-intercepts are (4,0) and (-9,0)