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[tex]\sqrt{50}+\sqrt{18}=\sqrt{25\cdot2}+\sqrt{3\cdot2}=\sqrt{5^2\cdot2}+\sqrt{3^2\cdot2}=5\sqrt2+3\sqrt2=8\sqrt2\\[/tex]
[tex]\sqrt{50}+\sqrt{18}=\sqrt{2*25}+\sqrt{2*9}=5\sqrt2+3\sqrt2=8\sqrt2[/tex]
