2. If the roots of the quadratic equation Kx2 + 4x+ 1- 0 are real and – InterviewSolution

1.

2. If the roots of the quadratic equation Kx2 + 4x+ 1- 0 are real and equal. Then find K.

Answer»

For equal roots of quadratic equationb^2 - 4*a*c = 0

In quadratic equation kx^2 + 4x + 1=0a = k, b = 4, c = 1

4*4 - 4*k*1 = 016 = 4kK = 16/4 = 4

Value of k is 4

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