Question

For what values of k, the equation 9x2+6kx+4=0 has equal roots?

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Answer 1

Answer:

k = 2

Step-by-step explanation:

If equation has equal roots then,,

Discriminant (D) = 0

D = b² - 4ac = 0

==: 9x² + 6kx + 4 = 0

a = 9 , b = 6k , c = 4

D = 36k² - 144 = 0

(6k)² - (12)² = 0

(6k - 12) (6k + 12) = 0

k = 2

Hope it helps you in education

Answer 2

Step-by-step explanation:

18+24k=0

24k=-18

k=-18/24

k=-3/4