Find the value(s) of 'k' so that the quadratic equation 4x^2 + kx + 1 = 0 has real and equal roots.... | VSA 2m | Maths | SuperPadhai

Quadratic Equations > Question

VSA2 marksYear: 2025EasyCBSE Class 10

quadratic-equationsdiscriminantequal-roots

Question

Find the value(s) of '

k

' so that the quadratic equation

4 x^{2} + k x + 1 = 0

has real and equal roots.

Solution

1

For real and equal roots,

D = 0

.

k^{2} - 16 = 0

+1.5 marks

2

k = \pm 4

+0.5 marks

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