1. 2x ^ 2 - 10x+8 = 0
Discriminant and nature of the roots

2. x ^ 2+x+1 = 0
Discriminant and nature of the roots

3. x ^ 2+2x = 0
Discriminant and nature of the roots

4. 4x ^ 2 - 5x = 6
Discriminant and nature of the roots

5. 3x ^ 2 - 2x - 5 = 0
Discriminant and nature of the roots​