Question

The harmonic mean of the roots of the equation (5 + $\sqrt { 2 }$ )

x² – (4 +$\sqrt { 5 }$)x + 8 + $2 \sqrt { 5 } = 0$ is –

• A. 2
• B. 4
• C. 6
• D. 8

Answer 1

Answer: (B)

4

Answer 2

2ab / a+b = 4