Răspuns:
1) a)
[tex] \sqrt{2 } \times \sqrt{7} = \sqrt{14} = 7 \\ [/tex]
b)
[tex]2 \sqrt{5} \: \: b = 4 \sqrt{2} [/tex]
[tex]2 \sqrt{5 } < 4 \sqrt{2} [/tex]
c)
[tex]mg = \sqrt{a \times b} [/tex]
[tex]mg = \sqrt{ \sqrt{3 } \times \sqrt{27} } \\ mg = \sqrt{81} = 9[/tex]
d)
[tex]( { \sqrt{3}) }^{3} \times \sqrt{147} \\ = 3 \times \sqrt{3} \times \sqrt{147} \\ = 3 \times \sqrt{441} \\ 3 \times 21 \\ = 63[/tex]
