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21 September, 19:20

Use the graph of the function y = - x2 + 2x + 8 to determine the solutions of the quadratic equation 0 = - x2 + 2x + 8. What are the solutions of the quadratic equation 0 = - x2 + 2x + 8? - 4 and 2 - 2 and 8 - 2 and 4 4 and 8

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  1. 21 September, 21:38
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    As given in the equation

    y=-x^2+2x+8

    -x^2+2x+8=0

    -x^2+4x-2x+8=0

    -x (x-4) - 2 (x-4) = 0

    (-x-2) (x-4) = 0

    x=4 and x=-2

    So, option C is correct, the - 2 and 4 is the solution of this equation.
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