Răspunsuri

2014-09-11T17:27:59+03:00
1.da este egala 
la al doilea nustiu

2014-09-11T18:04:16+03:00
 \frac{x-2}{3} = \frac{1}{2} -x
2x-4=3-3x
5x=7
x= \frac{7}{5}
2.

Ma=(√2+1+ \frac{1}{ \sqrt{2}+1 } ):2
rationalizam cu √2-1
(√2+1+√2-1):2=2√2:2=√2


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