Exercise 2.1

EXERCISE 2.1

1. Find the discriminant of the following given quadratic equations:

2. Find the nature of the roots of the following given quadratic equations and verify the result by solving the equations:

3. For what value of $k$ , the expression $k^{2}x^{2} + 2(k + 1)x + 4$ is perfect square.

4. Find the value of $k$ , if the roots of the following equations are equal.