For what positive value of k, the equation 3x² + 2kx + 3 = 0 has real and equal roots?

Equation: 3x² + 2kx + 3 = 0

Discriminant of a quadratic equation, $$ax^2 + bx + c = 0$$​ is given by:
​$$\Delta = b^2 - 4ac$$​​

For real and equal roots:

​$$\Delta = 0$$​​

Solution: