Questions − Solving quadratics of the form x² + bx + c = 0
using the quadratic formula

1.  Solve x² + 6x + 8 = 0

2.  Find the values of x where x² + 9x + 18 = 0

3.  Solve x² + x − 56 = 0

4.  Find the values of x where x² + 10x − 24 = 0

5.  Solve x² − 16x + 60 = 0

6.  Find the values of x where x² − 15x + 36 = 0

7.  Solve x² − 8x − 48 = 0