Please complete and hand in on Monday 18 September:
Solve by factorising:
1. x2 - 7x - 8 = 0
2. x2 + x - 12 = 0
3. 3x2 + 11x + 6 = 0
4. 10x2 - 9x - 7 = 0
Complete the square, sketch graphs showing line of symmetry and coordinates of max or min point:
5. y = x2 + 8x - 7
6. y = 3x2 - 15x + 8
7. y = -2x2 + 6x - 1
Solve using the quadratic formula giving roots to 3 sig fig:
8. 2x2 - 5x - 4 = 0
9. 3x2 + 8x + 4 = 0
10. State the values of the discriminants in Q8 and Q9