Question

find the value of k if the quadratic equation 3x sq. - k√3 +4 = 0 has equal roots

Answer 1

 = b^2-4ac = 0
 = 3k^2-48 = 0
 = 3k^2 = 48 
 = k^2 = 16 
 = k = 4 

Answer 2

B2-4ac=0
(k√3)2-4×3×4=0
3k2-48=0
3k2=48
k2=16
k=4