Răspuns:
c)
[tex] \sqrt{ {3}^{8} } = \sqrt{3 \times 3 \times3 \times 3 \times 3 \times 3 \times 3 \times 3 } = \sqrt{27 \times 27 \times 9} = \sqrt{729 \times 9 } = \sqrt{6561} = 81[/tex]
h)
[tex] \sqrt{ {( - 7}^{4}) } = \sqrt{( - 7) \times ( - 7) \times ( - 7) \times ( - 7)} = \sqrt{49 \times 49} = \sqrt{2401} = 49[/tex]
