Answers

2014-06-21T11:06:45+08:00
1. x² - 6x - 27 =0
    (x - 9)(x + 3) = 0
2. x² + 6x - 16 = 0
    (x + 8)(x - 2) = 0
3. x² - 2x - 48 = 0
    (x + 6)(x - 8) = 0
4. x² - 9x + 20 = 0
    (x - 4)(x - 5) = 0
5. x² - 11x + 24 = 0
    (x - 8)(x - 3) = 0
6. x² + 10x + 24 = 0
    (x + 4)(x + 6) = 0
7. x² + 6x + 5 = 0
    (x + 5)(x + 1) = 0
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