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January 31, 2015

January 31, 2015

Posted by **Bob** on Tuesday, May 20, 2008 at 6:46pm.

x squared + 4 x

x squared + x + x + 1

- Math -
**drwls**, Tuesday, May 20, 2008 at 7:41pmx^2 + 4x = x(x+4)

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

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