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26 May, 14:57

If g (x) = x^2-5, where does the graph g (x) cross the x-axis?

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  1. 26 May, 15:17
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    The graph crosses the x axis where g (x) = 0, so:-

    x^2 - 5 = 0

    x^2 = 5

    x = sqrt5 or - sqrt5

    so grapg corosses the x axis at (-sqrt5,0) and (sqrt5, 0)
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