JEE Main Mathematics question
Suppose are the roots of the cubic . Then the value of is
Answer: 7
Solution
From the cubic, , and . a^3+b^3+c^3=(a+b+c)^3-3(a+b+c)(ab+bc+ca)+3abc. This is .
Suppose are the roots of the cubic . Then the value of is
From the cubic, , and . a^3+b^3+c^3=(a+b+c)^3-3(a+b+c)(ab+bc+ca)+3abc. This is .