Question

q. what is the proper way to write the answer for the following problem?

Explanation:

Step1: Identify root and coefficients

Root: $x=4$; Original coefficients: $2, -9, -21, 88, 48$

Step2: Interpret synthetic division results

Final row $2, -1, -25, -12, 0$: degree reduces by 1

Step3: Write polynomial from coefficients

Result: $2x^3 - x^2 -25x -12$ (since remainder=0, $x-4$ is a factor)

Answer:

$2x^3 - x^2 -25x -12$