Which graph is the graph of the function r(x)=x^2+6x+8/2x+8

I'm confused on that I really dont get the answer

i think the answer is .36

step-by-step explanation:

what i did was only 2.88 divided by 8

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.