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January 31, 2015

January 31, 2015

Posted by **jerri** on Thursday, October 3, 2013 at 11:14pm.

(5x+1)^2 + 13=0

- math -
**Steve**, Friday, October 4, 2013 at 12:34amto use the QF, first expand things

25x^2 + 10x + 1 + 13 = 0

25x^2 + 10x + 14 = 0

Now just plug your numbers into the QF. The roots will be complex, as you can easily see since

(5x+1)^2 = -13

but the left side is always positive, meaning there are no real solutions.

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