IPMAT Indore 2023 QA: If the harmonic mean of the roots of the equation (5+√2)x2 - bx + 8 + 2√5 = 0:

If the harmonic mean of the roots of the equation (5+√2)x2 - bx + 8 + 2√5 = 0 is 4 then the value of b is:
a. 4 + √5
b. 2
c. 3
d. 4 - √5
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