Answers

2014-06-23T18:45:15+08:00
(x-4)^{2} = 169
 x^{2} -8x+16=169
 x^{2} -8x+16-169=0
 x^{2} -8x-153=0
(x+9)(x-17)
x+9=0
x=-9
x-17=0
x=17

x=-9;x=17
0
Thank you so much;)
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