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Heya!!
For real and equal roots Descrimnant is equal to 0
Given Quadratic Equation is
k(x² + 9) - 3x = 0
kx² + 9k - 3x = 0
kx² - 3x + 9k = 0
Descrimnant = (-3)² - 4(k)(9k)
Descrimnant = 9 -36k²
Descrimnant = 0 For real and Equal roots
9 - 36k² = 0
36k² = 9
k² = 1/4
k = 1/2 OR k = -1/2
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