railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Mathematics Quadratic Equations Sum and Product of Roots
If α and β are the roots of the quadratic equation (5 + √2) x2 - (4 + √5) x + (8 + 2√5) = 0, then the value of 2αβ/ (α + β) is:
1
7
2
4
3
2
4
8