Răspuns:
3 a)
[tex] \sqrt{3} \times \sqrt{3} \times \sqrt{3} \times \sqrt{3 } = 3 \times 3 = 9[/tex]
b
[tex] - \sqrt{2} \times( - \sqrt{2} ) = 2[/tex]
c
[tex]( - \sqrt{2}) \times ( - \sqrt{2}) \times ( - \sqrt{2}) = 2 \times ( - \sqrt{2} ) = - 2 \sqrt{2} [/tex]
d
[tex]5 \sqrt{7} \times 5 \sqrt{7} = 25 \times 7 = 175[/tex]
e
[tex]( - 2 \sqrt{3} ) \times ( - 2 \sqrt{3} ) \times ( - 2 \sqrt{3) } = - 24 \sqrt{3} [/tex]
f
[tex] - \sqrt{11} [/tex]
g
[tex] \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} = 2 \times 2 \times 2 \times 2 \times 2 = 32[/tex]
h
[tex](3 \sqrt{2} ) \times (3 \sqrt{2} ) \times (3 \sqrt{2} ) \times (3 \sqrt{2} ) = 9 \times 2 \times 9 \times 2 = 18 \times 18 = 324[/tex]
i
[tex] ( - 5 \sqrt{3} ) \times ( - 5 \sqrt{3} ) = 25 \times 3 = 75[/tex]
j
[tex](11 \sqrt{11} )\times (11 \sqrt{11} ) = 121 \times 11 = 1331[/tex]
k
[tex]( - 5 \sqrt{2} ) \times ( - 5 \sqrt{2} ) \times ( - 5 \sqrt{2} ) =50 \times ( - 5 \sqrt{2} ) = - 250 \sqrt{2} [/tex]
l
[tex]( - \sqrt{7} ) \times ( - \sqrt{7}) \times ( - \sqrt{7} ) \times ( - \sqrt{7} ) \times ( - \sqrt{7) } = 7 \times 7 \times ( - \sqrt{7} ) = - 49 \sqrt{7} [/tex]
