What are the x-intercepts of the graph of the function f(x) = x^2+ 5x - 36?
(-4,0) and (9,0)
(4,0) and (-9, 0)
(-3,0) and (12,0)
(3, 0) and (-12, 0)

(-4,0) (9,0)

Step-by-step explanation:

x²+9x-4x-36

x(x+9)-4(x+9)

(x+9)(x-4)

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day