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10 December, 06:50

Find the roots of the quadratic equation x2 - 8x = 9 by completing the square. Show your work. i need a simple answer to the question. step-by-step

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  1. 10 December, 08:02
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    Solve y = x^2 - 8x - 9 = 0

    Explanation:

    In this case, you don't need to solve by completing the squares.

    Use the shortcut.

    When (a - b + c = 0) - -> 2 real roots: (-1) and (-c/a = 9).
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