If the harmonic mean of the roots of \sqrt2x^{2}-bx+(8-2\sqrt5)=0 is 4, then the value of b=

AP EAMCET Engineering 2015 Code A Paper

Section: Mathematics

Question : 13 of 160

Marks: +1, -0

If the harmonic mean of the roots of √2x2−bx+(8−2√5)=0 is 4, then the value of b=

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