Answers

2014-08-21T20:17:31+08:00
 x^{2} +3X-2+ 2x^{2} +4= x^{2} -4 x^{2} -4
2 x^{2} +x+2=-3 x^{2} -4
5 x^{2} +x+6=0
(5x+6)(x-1) =0
5x+6
5x=-6
x= \frac{-6}{5}
x-1
x=1
consider the positive value which is 1 and not -6/5
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