Răspuns:
2.
[tex]ionut = 3 \times ( - 0.08) = - 0.24 \\ maria = 0.4 \times ( - 0.08) = - 0.032 \\ ana = ( - 0.08) - ( - 0.6) = - 0.08 + 0.6 = 0.52 \\ ioana = ( - 0.08) + ( - 0.09) = 0.08 - 0.09 = - 0.17[/tex]
Elevul care a calculat corect este ANA.
5.
[tex] - \sqrt{ 3} = > - 3 \sqrt{2 } = - \sqrt{ {3}^{2} \times 2 } = - \sqrt{9 \times 2} = - \sqrt{18} \\ - 3 = - \sqrt{ {3}^{2} } = - \sqrt{9} = > - 2 \sqrt{3} = - \sqrt{ {2}^{2} \times 3 } = - \sqrt{12} \\ - \sqrt{12} = - \sqrt{3} [/tex]
Raspunsul este a)
