Question

if X=3 is one root of the quadratic equation x^2-2kx-6 then find the value of k.​

Answer 1

if one root is 3 then it will do the whole eqn =0

then 9-6k-6=0

-6k=-3

K= 1/2

Answer 2

substitute the value of x

9-6k-6=0

-6k=-3

k=1/2

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