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January 31, 2015

January 31, 2015

Posted by **Phillip** on Friday, July 29, 2011 at 1:41pm.

- geometry -
**Henry**, Friday, July 29, 2011 at 8:26pmA(-4,1), B(x,-3).

(AB)^2 = (x-(-4))^2 + (-3-1)^2 = 5^2,

(x+4)^2 + 16 = 25 - 16 = 9 ,

Take sqrt of both sides:

x+4 = +- 3,

x = -4 +-3,

x = -1, and x = -7.

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