Respostas

2014-05-06T21:30:27-03:00
a) \;\ \sqrt{2} \cdot\sqrt{5} =\sqrt{10} \\ b) \;\ \sqrt{3} \cdot\sqrt{15} =\sqrt{3\cdot15}=\sqrt{45}=\sqrt{9\cdot5} =\sqrt{9} \cdot\sqrt{5} =3\sqrt{5} \\ c) \;\ \sqrt{2} \cdot\sqrt{98} =\sqrt{2\cdot98}=\sqrt{196}=14 \\ e) \;\ \sqrt{800}:\sqrt{2} =\sqrt{800:2}=\sqrt{400}=20
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√50 .√3.6 seria √50 * √(3*6)?