Oct 22 Discriminant Solutions

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Oct 22 Discriminant Solutions

  1. 1. For each of the following quadratics 1. Find the value of the discriminant. 2. Use the value to determine the nature of the        roots. 3. Use to quadratic formula to find the exact      value for the roots of each quadratic. 4. Draw a very rough sketch of what the quadratic might        look like. a)  x2 ­ x ­12 = 0 b)  ­x2 + 2x + 18 = 0 c)  x2 ­ x + 2 = 0 d)  ­x2 + x ­ 4 = 0 e)  x2 ­ 6x + 9 = 0 f)  ­x2 + 10x ­25 = 0  1
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