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steve816
 one year ago
Please help me!
Find x so that the distance between the points (6, 1) and (x, 9) is 12.
steve816
 one year ago
Please help me! Find x so that the distance between the points (6, 1) and (x, 9) is 12.

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steve816
 one year ago
Best ResponseYou've already chosen the best response.0So far, this is what I have:\[12=\sqrt{x^212x+138}\] Not sure what to do from here :/

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1\[\Large d = \sqrt{\left(x_{2}x_{1}\right)^2+\left(y_{2}y_{1}\right)^2}\] \[\Large 12 = \sqrt{\left(x6\right)^2+\left(19\right)^2}\] \[\Large 12 = \sqrt{\left(x6\right)^2+\left(10\right)^2}\] \[\Large 12 = \sqrt{x^212x+36+100}\] \[\Large 12 = \sqrt{x^212x+136}\] I'm not sure how you got 138. Did you mean 136??

steve816
 one year ago
Best ResponseYou've already chosen the best response.0@ganeshie8 Please! I need a step by step guide.

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1square both sides, what do you get ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1\(12 = \sqrt{x^212x+136}\) square both sides and get \(144 = x^212x+136\) rearranging a bit \(x^212x8=0\)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1you may use quadratic formula to solve x
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