Explicație pas cu pas:
[tex]\bf a) \: \: 3\sqrt{2} + \sqrt{18} - \sqrt{50} =[/tex]
[tex]\bf 3\sqrt{2} + \sqrt{2\cdot3^{2}} - \sqrt{2\cdot5^{2}} =[/tex]
[tex]\bf 3\sqrt{2} + 3\sqrt{2} - 5\sqrt{2} =[/tex]
[tex]\bf 6\sqrt{2}- 5\sqrt{2} =\green{\underline{~\sqrt{2}~}}[/tex]
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[tex]\bf b) \: \: \sqrt{27} + 2\sqrt{3} - \sqrt{75} =[/tex]
[tex]\bf \sqrt{3^{3}} + 2\sqrt{3} - \sqrt{3\cdot5^{2}} =[/tex]
[tex]\bf 3\sqrt{3} + 2\sqrt{3} - 5\sqrt{3} =[/tex]
[tex]\bf 5\sqrt{3} - 5\sqrt{3}=\blue{\underline{~0~}}[/tex]
