Question

If f(x)=x^4+x^3+2 and g(x)=x^3-x+6, find: f(x) + g(x)

(a) 2x^4+2x^3+x+8

(b) x^4+2x^3-x+8

(c) x^4+x^2+x+8

(d) x^4+x^3+8

The question was posed to me in an interview.

Enquiry is from Polynomial and Modular Arithmetic- I in chapter Basic Concepts in Number Theory and Finite Fields of Cryptograph & Network Security

Answer 1

Correct answer is (b) x^4+2x^3-x+8

To explain I would say: Perform polynomial addition.