Mathmatics

The point (x,-1) is 13 units from the point (3,11), What are the possible values of x ?

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  1. (x-3)^2 + (y-11)^2 = 13^2 = 169
    y = -1

    Solve those two equations simultaneously for x.

    (x-3)^2 +(12) = 169
    (x-3)^2 = 25
    x - 3 = + or - 5
    x = -2 or 8. y = -1 in both cases

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  2. thanks

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