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2013-09-12T19:05:20-03:00
(3x+2)^2 - (2x+3)^2 =(9x^2 + 4) - (4x^2 + 9) =
9x^2 + 4 - 4x^2 - 9 =
5X^2 - 5 =
5x^2 = 5
x^2 = 5/5
X =  \sqrt{1}
x = 1
1 5 1
2013-09-12T19:07:11-03:00