Question

If one root of the equation 4x² – 2x + (λ – 4) = 0 be the reciprocal of the other, then k
A. 8
B. – 8
C. 4
D. – 4

Answer 1

Answer:

A.8

Step-by-step explanation:

now one root is reciprocal of the other

let one be a and other be 1/a

then product of zeros=(a)(1/a)=(Π-4)/(4)

1=(Π-4)/4

thus 4= Π-4

Π=4+4=8