Question

Let f(x) = 8x3 − 28x + 61 and g(x) = 2x + 5. Find f of x over g of x.

Answer 1

9x2 − 11x − 7
9x2 + 11x + 7
9x3 − 11x2 − 7x
9x3 + 11x2 + 7x

Answer 2

So you're saying \[\frac{f(x)}{g(x)}=\frac{8x^3-28x+61}{2x+5}\]

So basically simplifying polynomials.
The basic rule is:
1. Find any restrictions on the domain, In this case, the denominator can't be 0.
2. Factor out both the top and bottom.
3. Simplify by canceling out like-factors on the top and bottom.

Answer 3

still lost...