Answers − Solving quadratics of the form x2 + bx + c = 0 using the quadratic formula
1. Solve x2 + 6x + 8 = 0
Verify by putting these two values of x into x2 + 6x + 8
2. Solve x2 + 9x + 18 = 0
Verify by putting these two values of x into x2 + 9x + 18
3. Solve x2 + x − 56 = 0
Verify by putting these two values of x into x2 + x − 56
4. Solve x2 + 10x − 24 = 0
Verify by putting these two values of x into x2 + 10x − 24
5. Solve x2 − 16x + 60 = 0
Verify by putting these two values of x into x2 − 16x + 60
6. Solve x2 − 15x + 36 = 0
Verify by putting these two values of x into x2 − 15x + 36
7. Solve x2 − 8x − 48 = 0
Verify by putting these two values of x into x2 − 8x − 48
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