Q. 11 C5.0( 1 Vote )

Find the values of k, for which the given equation has real roots:

kx2+ 4x + 1 = 0

Answer :

Roots are equal

d = 0

d = b2 – 4ac

d = (4)2 – 4 (1) (k)

d = 16 – 4k

Put d = 0

0 = 16 – 4k

4k = 16

k = 4

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