### Answers − Solving quadratics of the form x^{2} + bx + c = 0 using the quadratic formula

#### 1. Solve x^{2} + 6x + 8 = 0

Verify by putting these two values of x into x^{2} + 6x + 8

#### 2. Solve x^{2} + 9x + 18 = 0

Verify by putting these two values of x into x^{2} + 9x + 18

#### 3. Solve x^{2} + x − 56 = 0

Verify by putting these two values of x into x^{2} + x − 56

#### 4. Solve x^{2} + 10x − 24 = 0

Verify by putting these two values of x into x^{2} + 10x − 24

#### 5. Solve x^{2} − 16x + 60 = 0

Verify by putting these two values of x into x^{2} − 16x + 60

#### 6. Solve x^{2} − 15x + 36 = 0

Verify by putting these two values of x into x^{2} − 15x + 36

#### 7. Solve x^{2} − 8x − 48 = 0

Verify by putting these two values of x into x^{2} − 8x − 48

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