Ifx= 3 is one root of the quadratic equation x2-2kr-6-0, then tind the – InterviewSolution

1.

Ifx= 3 is one root of the quadratic equation x2-2kr-6-0, then tind the value of k.

Answer»

As x = 3 is root of equation x^2 - 2kx - 6 = 0

Then,For x = 3 equation will be equal to 0

Hence,(3)^2 - 2k*3 - 6 = 09 - 6k - 6 = 06k = 3k = 3/6 = 1/2

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