Question

The equation 2x2 + kx + 3 = 0 has two equal roots, then the value of k is





a)tv6

b) 4

c)1372

d):2V6​

Answer 1

Answer:

we have to find the values of k for quadratic equations 2x² + kx + 3 = 0 so that they have two equal roots.

we know, quadratic equation will be equal only when

discriminant, D = b2 - 4ac = 0

on comparing 2x2 + kx + 3 = 0 with general form of quadratic equation , ax? + bx + c = 0 we get, a = 2, b = k and c = 3

so Discriminant, D = (k)? - 4(2)(3) = 0 !!

or, k? - 24 = 0

or, k= + 124 = +276

hence, the value of k = 2v6 or -2v6

Step-by-step explanation:

Hope it will help you.........❤...........