Răspuns:
[tex]\green{\bf a)~~~ -5~ < ~5,7}[/tex]
[tex]\blue{\bf b)~~~ 1,5~ > ~1,4}[/tex]
[tex]\bf c)~~-\sqrt{5} ~~\boxed{~}~-2,23~~~\bigg|^{2}[/tex]
[tex]\bf (-\sqrt{5})^{2} ~~\boxed{~}~~(-2,23)^{2}[/tex]
[tex]\bf (\sqrt{5})^{2} ~~\boxed{~}~~(2,23)^{2}[/tex]
[tex]\pink{\boxed{\bf 5~~~>~~4,9729}}[/tex]