ashleysmith
solve by completing the square.
x(to 2nd power) 6x16=0



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SmoothMath
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The first thing to do is make it look like something you can complete the square for. Get the x^2 and the x part of the equation alone.

cwtan
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Completing the square
(x3)^23^216=0

cwtan
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(x3)^2=25
x3=\(\pm\)5

ashleysmith
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thank you!!!