Answer:
-16
Step-by-step explanation:

Answer: D
take 5/15 and simplify to 3/1
The required standard form is 
<h3>Polynomial function</h3>
Given the polynomial function expressed as:
We are to express this polynomial in standard form
To do that, we will write the degrees of the variables in descending order of magnitude as shown:

Hence the required standard form is 
Learn more on polynomial functions here: brainly.com/question/7693326
Answer:f(x)=x2−6x−9 f ( x ) = x 2 - 6 x - 9. Replace f(x) f ( x ) with y y . y=x2−6x−9 y = x 2 - 6 x - 9. Interchange the variables. x=y2−6y−9 x = y 2 - 6 y - 9.
Step-by-step explanation: