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. Comparati numerele x si y, unde x = -8, iar y = -5 radical din 3
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Răspuns :

 

[tex]\displaystyle\bf\\x=-8\\y=-5\sqrt{3}\\Pentru~comparare~le~ridicam~la~puterea~a~ 2-a,~dar~fara~semn.\\\\-\Big(8\Big)^2=-64\\\\-\Big(5\sqrt{3}\Big)^2=-\Big(25\times3\Big)=-75\\\\-75<-64\\\\\implies~~-5\sqrt{3}<-8\\\\\implies~~y<x[/tex]

 

 

 

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