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2014-04-01T22:37:13+03:00
 3\sqrt{2}x -5 \sqrt{2} =0=> 3\sqrt{2} x=5 \sqrt{2}  => x= \frac{5 \sqrt{2} }{3 \sqrt{2} } = \frac{5}{3}  nu apartine lui Z
 3\sqrt{5}x + 6\sqrt{5} =0=>3 \sqrt{5} x=-6 \sqrt{5} =>x= \frac{-6 \sqrt{5} }{3 \sqrt{5} }=-2 apartine Z
=>S={-2}
3x= \sqrt{3} =>x=  \frac{ \sqrt{3} }{3}  nu apartine Q e irational
2x+9=0=> 2x=-9=>x=-9/2=-4,5 apartine Q=>S={-9/2}
 \frac{3x}{4} =  \frac{-4}{5} => 3x= \frac{-16}{5} => x= \frac{-16}{15} =>S={-16/15}
 \frac{3 \sqrt{5} }{4} x= \frac{ \sqrt{5} }{2} =>x= \frac{ \sqrt{5}}{2} * \frac{4}{3 \sqrt{5} } = \frac{4}{6} = \frac{2}{3} apartine Q=> S={2/3}


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