Let f (x) = 8x^3 - 28x + 61 and g (x) = 2x+5. find f (x) over g (x)

8 (2x+5) ^3 - 28 (2x+5) + 61 OR 64x^3 + 480x^2 + 1144x + 921

Step-by-step explanation:

I believe you are trying to find f (g (x)). To do this, you must insert g (x) in the place of x in the function.

f (g (x)) = 8 (2x+5) ^3 - 28 (2x+5) + 61

Then, if you don't want to leave this as your answer and simplify, multiply and foil out to get:

64x^3 + 480x^2 + 1144x + 921

Edit: After looking at it, the question might be f (x) / g (x). In that case, use long division with f (x) on the inside and g (x) on the outside. Otherwise, use the answer above.