Find (f −1)(a)

f(x) = 3x^3 + 3x^2 + 6x + 5, a = 5

Step-by-step explanation:

From the problem statement,  let us say that you were meant to write

f(-1)a so that x= -1

Moving forward this question requires that we substitute the value of x= -1 in the given equation and multiply the final answer by a which 5

Substituting x=-1 for x in the expression we have

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

correct answer is b. 27/8

step-by-step explanation: