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MD ReviewT4

# MD ReviewT4 - Math D Review for Test#4 Chapters 8 and 9 The...

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Math D Review for Test #4 Chapters 8 and 9 Solve the equation by the square root property. If possible, simplify radicals or rationalize denominators. Express imaginary solutions in the form a + bi. 1) 2x 2 = 72 2) (x + 2) 2 = 14 3) (x - 3) 2 = - 64 4) x - 3 2 2 = 49 4 Solve the quadratic equation by completing the square. 5) x 2 - 2x - 15 = 0 6) x 2 + 5x - 5 = 0 7) x 2 + x + 3 = 0 8) x 2 - 3 7 x - 10 49 = 0 Use the quadratic formula to solve the equation. 9) x 2 - 3x - 40 = 0 10) x 2 + 5x + 1 = 0 11) 8x 2 - 5x + 2 = 0 12) 16x 2 + 1 = 7x The graph of a quadratic function is given. Determine the function's equation. 13) Sketch the graph of the quadratic function. Give the vertex and axis of symmetry. 14) y + 4 = (x - 2) 2 15) f(x) = 9 - (x + 3) 2 1

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Sketch the graph of the quadratic function. Identify the vertex, intercepts, and the equation for the axis of symmetry. 16) f(x) = 10 + 7x + x 2 17) f(x) = - 3x 2 - 12x - 15 Determine whether the given quadratic function has a minimum value or maximum value. Then find the minimum or maximum value and determine where it occurs.
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