The equation 2xᒾ +Kx +3 = 0 has 2 equal roots, then the value of K is :
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2 equal roots => D = 0
=> b²-4ac = 0
=> K² - 4×2×3 = 0
=> K² - 24 = 0
=> K² = 24
=> K = ±√24 = ±2√6
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