coroana???
a)
[tex] { \sqrt{2} }^{25} \div { \sqrt{2} }^{22} = { \sqrt{2} }^{3} = \sqrt{2} \times \sqrt{2} \times \sqrt{2} = 2 \times \sqrt{2} = 2 \sqrt{2} [/tex]
b)
[tex] { \sqrt{3} }^{20} \div { \sqrt{3} }^{18} = { \sqrt{3} }^{2} = \sqrt{ 3} \times \sqrt{3} = 3[/tex]
c)
[tex] { \sqrt{2} }^{28} \div { \sqrt{2} }^{23} = { \sqrt{2} }^{5} = \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} \times \sqrt{2} = 2 \times 2 \times \sqrt{2} = 4 \times \sqrt{2} = 4 \sqrt{2} [/tex]
d)
[tex] {( - \sqrt{5}) }^{20} \div {( - \sqrt{5)} }^{16} = {( - \sqrt{5)} }^{4} = - \sqrt{5} \times ( - \sqrt{5)} \times ( - \sqrt{5)} \times ( - \sqrt{5)} =5 \times 5 = 25[/tex]
e)
[tex] {( - \sqrt{6)} }^{27} \div {( - \sqrt{6)} }^{24} = {( - \sqrt{6)} }^{3} = - \sqrt{6} \times ( - \sqrt{6} ) \times ( - \sqrt{6)} = 6 \times ( - \sqrt{6)} = - 6 \sqrt{6} [/tex]
f)
[tex] {( - \sqrt{7)} }^{35} \div {( - \sqrt{7)} }^{31} = {( - \sqrt{7)} }^{4} = - \sqrt{7} \times ( - \sqrt{7)} \times ( - \sqrt{7}) \times ( - \sqrt{7)} = 7 \times 7 = 49[/tex]
