Q1Roots of x² − 5x + 6 = 0:

Q2Discriminant of x² + 4x + 5 = 0:

Q3Sum of roots of 2x² + 6x − 5 = 0:

Q4If α, β are roots, αβ for x² − 4x + 7:

Q5Number of real roots if D = 0: