The values of k for which the quadratic equation 16x2 + 4kx + 9 = o has real and equal roots are

To have real and equal roots d = 0b2 – 4ac = 0here a = 16, b = 4k and c = 9(4k)2 – 4 x 16 x 9 = 016 k2 – 576 = 0k2 = 576 /16k = 24/ 4k = 6

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The values of k for which the quadratic equation 16x² + 4kx + 9 = o has real and equal roots are

To have real and equal roots d = 0

b² – 4ac = 0

here a = 16, b = 4k and c = 9

(4k)² – 4 x 16 x 9 = 0

16 k² – 576 = 0

k² = 576 /16

k = 24/ 4

k = 6

If one root of the equation 2x² + kx + 4 = 0 is 2, then the other root is

If one root of the equation x² + ax + 3 = 0 is 1, then its other root is

If one root of the equation 4x² – 2x + (λ – 4) = 0 be the reciprocal of the other, then k

If y = 1 is a common root of the equations ay² + ay + 3 = 0 and y² + y + b = 0, then ab equals