Question

The equation 2xᒾ +Kx +3 = 0 has 2 equal roots, then the value of K
a)±√6
b) ± 4
c) ± 3√2
d) ± 2√6

Answer 1

Answer:

hello

sorry for disturbing: answer is option d

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here explanation:

Step-by-step explanation:

Given,

2x^2+Kx+3

here it is in the form ax^2+bc+C=0

here a=2, b=K, c=3

if it has two equal roots. then ∆=0

b^2-4ac=0

k^2-4(2)(3)=0

k^2-24=0

k^2=24

k=√24

k=+2√6 or -2√6