Find k if the following equations have two equal roots 1. 2x×x +kx-3

1.	Find k if the following equations have two equal roots 1. 2x×x +kx-3 =0
Answer» 2x2 + kx - 3 = 0Comparing equation with ax2 + bx + c = 0, we geta = 2, b = k and c = -3Discriminant = b2 - 4ac= (k)2 - 4(2) (-3)= k2 + 24For equal roots,Discriminant = 0k2 + 24 = 0k2 = - 24k = -√24 = -2√6\xa0

Discussion