The equation whose roots are the ari...

The equation whose roots are the arithmetic mean and twice the H.M between the roots of the equation `x^2 + ax -b=0` is

A

`x^(2)-bx+a=0`

B

`2ax^(2)-a^(2)x+4b=0`

C

`2ax^(2)+ (a^(2)-8b)x-4ab=0`

D

`2ax^(2)-8bx-4ab=0`

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The correct Answer is:

C

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