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September 20, 2014

September 20, 2014

Posted by **chama** on Wednesday, March 14, 2012 at 11:08am.

- maths -
**Steve**, Wednesday, March 14, 2012 at 2:41pmIf x^2+(3k+1)x+k^2 is a perfect square, then

3k+1 = 2k

because (x+a)^2 = x^2 + 2ax + a^2

so, k=-1, and your polynomial is

x^2 -2x + 1 = (x-1)^2

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