Tell whether each of the following represents a quadratic inequality or not.
1. x² + 2x - 3 > 0
2. 3x² - 5x = 6
3. (x + 3)(x - 3) = 7
4. 2x² + x = 6
5. x + 3 ≥ 9
6. x² = 7x + 3
7. 3x² > 8x - 4
8. 2x - 3x - 5 ≤ 0
9. (x + 7)(x - 1) < 4
10. 5x² >4x - 1
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Answer:
1. Quadratic
2.Quadratic
3.not
4.not
5.Quadratic
6.not
7.Quadratic
8.Quadratic
9.not
10.Quadratic
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