Question

If f(x)=x^3+x^2+2 and g(x)=x^2-x+1, find: f(x) – g(x)

(a) x^3+x+4

(b) x^3+x+1

(c) x^3+x^2+3

(d) x^3+3x+2

I got this question during an online interview.

The doubt is from Polynomial and Modular Arithmetic- I topic in division Basic Concepts in Number Theory and Finite Fields of Cryptograph & Network Security

Answer 1

Correct choice is (b) x^3+x+1

Explanation: We get the solutions via basic polynomial subtraction.