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17-05-2017
Mathematics

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Solve 3x 2 + 2 = 11 - x 2

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mjankiewicz mjankiewicz

17-05-2017

[tex]3x^2 + 2 = 11 - x^2\\\\ 3x^2+x^2=11-2\\\\ 4x^2=9\\\\(2x)^2=3^2\\\\ |2x|=3\\\\ 2x=3 \ or \ 2x=-3\\\\ x=\frac{3}{2} \ or \ x=-\frac{3}{2}[/tex]

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