Section 7.9: Mixed Practice
This section combines all factoring techniques, quadratic solutions, and special cases for comprehensive practice.
Mixed Practice Problems
- Factor: \( x^2 + 5x + 6 \)
- Solve: \( x^2 - 7x + 12 = 0 \)
- Factor completely: \( 2x^2 + 5x + 2 \)
- Solve: \( x^2 - 9x + 20 = 0 \)
- Word problem: Two consecutive numbers sum to 15. Find them.
- Factor: \( x^2 - 16 \)
- Solve: \( x^2 + 6x + 9 = 0 \)
- Solve: \( 3x^2 - 12x = 0 \)
- Word problem: Area of rectangle is \( x^2 + 7x + 12 \). Find dimensions.
- Mixed: \( x^2 - x - 12 = 0 \)