Hi, im doing a Maths quiz, and am only stuck now on a couple more questions where i was told my anwer is wrong....if anyone could show me the light, it would be appreciated.
1) Given:
x^3+1 = ( x+a ) ( x^2+bx+c )
Find the values of a, b and c. Please enter your answer as a list [in brackets], in the form: [a, b, c]
2) Factorise the following polynomial completely over the integers.
3 x^4+18 x^2+15