I- Find the discriminant and identity the value of the roots
1.x² + 7x-1=0
2.2x² - 4x +2=0
3. 5x²+2x+1=0
II- Find the sum and quadratic
4. 2y + 4y - 2 = 0
5.6y ²2- 2y + 8 - 0​