Question

2 MARKS
If 9x2 + kox + 1 = 0 has equal roots, then find the value of k. (M'16)​

Answer 1

Answer:

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Answer 2

Answer:

$6$

Step-by-step explanation:

9x² + kx + 1 = 0

D = b² - 4ac

here,

b = k

a = 9

c = 1

D = (k)² - 4×9×1 = 0

= k² - 36 = 0

k² = 36

k = √36

k = 6