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26 July, 05:22

What are the x intercepts of the quadratic function? Y=-x^2+2x-1

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  1. 26 July, 08:21
    0
    x = 1

    Step-by-step explanation:

    Given in the question the equation

    y = - x² + 2x - 1

    To find the x-intercept, substitute in 0 for y

    0 = - x² + 2x - 1

    To find value of x use quadratic equation

    x = - b ± √b²-4ac / 2a

    here a = - 1

    b = 2

    c = - 1

    x1 = - 2 + √2²-4 (-1) (-1) / 2 (-1)

    = - 2 + 0 / - 2

    = - 2 / - 2

    = 1

    x2 = - 2 - √2²-4 (-1) (-1) / 2 (-1)

    = - 2 - 0 / - 2

    = - 2 / - 2

    = 1
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