Q.

If one root of the equation 4x2-2x+k-4=0 is the reciprocal of the other, then the value of k is

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a

8

b

6

c

3

d

4

answer is A.

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Detailed Solution

4x2-2x+k-4=0

One root is α then other root is 1α so,

Product of the roots is ca then

a×1a=1

k-44=1

k=8

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