Răspuns:
2. Introduceti factorii sub radical:
[tex]a) 5\sqrt{3} =\sqrt{25x3} =\sqrt{75} \\b) 4\sqrt{5} =\sqrt{16x5} =\sqrt{80} \\c) 6\sqrt{3} =\sqrt{36x3} =\sqrt{108} \\d) 8\sqrt{2} =\sqrt{64x2} =\sqrt{128} \\e) 5\sqrt{5} =\sqrt{25x5} =\sqrt{125} \\f) 15\sqrt{2} =\sqrt{225x2} =\sqrt{500}[/tex]
3.Scoate factorii de sub radical:
[tex]a) \sqrt{75} =\sqrt{25x3} =5\sqrt{3}\\ b) \sqrt{32} =\sqrt{16x2} =4\sqrt{2}\\ c) \sqrt{72} =\sqrt{36x2} =6\sqrt{2} \\d) \sqrt{192} =\sqrt{64x3} =8\sqrt{3} \\e) \sqrt{150} =\sqrt{25x6} =5\sqrt{6} \\f) \sqrt{338} =\sqrt{169x2} =13\sqrt{2}[/tex]
