1

Work out the value of the discriminant $b^2 - 4ac$ for $2x^2 + 9x + 6 = 0$. [2]

2

Work out the value of the discriminant $b^2 - 4ac$ for $3x^2 + 9x - 2 = 0$. [2]

3

Work out the value of the discriminant $b^2 - 4ac$ for $2x^2 - 6x + 1 = 0$. [2]

4

Work out the value of the discriminant $b^2 - 4ac$ for $4x^2 - 3x + 3 = 0$. [2]

5

Work out the value of the discriminant $b^2 - 4ac$ for $2x^2 + 6x + 5 = 0$. [2]

6

Work out the value of the discriminant $b^2 - 4ac$ for $2x^2 - 3x + 3 = 0$. [2]

7

Work out the value of the discriminant $b^2 - 4ac$ for $2x^2 + 4x + 5 = 0$. [2]