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posted by Amanda on Sunday, September 18, 2011 at 4:38pm.
Find X such that the point (X, 8) is 13 units from (7, -4)
√((x-7)^2 + 12^2) = 13 square both sides and expand x^2 - 14x + 49 + 144 = 169 x^2 - 14x +24 = 0 (x-12)(x-2) = 0 x = 12 or x = 2
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