Question

a+b+c=5 and ab+bc+ac=10 to find a^3+b^3+c^3=?

Answer 1

(a+b+c)^3=a^3+b^3+c^3+ab+bc+ac

5^3=(a^3+b^3+c^3)+10

a^3+b^3+c^3=5^3-10

                    =125-10

                    =115