Question

Aflati mg a nr. √7^3 si √7^5

Answer 1

Mg= rad(rad(7^8))= rad7^4=7^2 = 49
-------------------------------------------------------

Answer 2

$mg=\sqrt{a*b}$

$mg=\sqrt{\sqrt{7^{3}}*\sqrt{7^{5}}}$

$mg=\sqrt{\sqrt{7^{3}*7^{5}}}$

$mg=\sqrt{\sqrt{7^{3+5}}}$

$mg=\sqrt{\sqrt{7^8}}$

$mg=\sqrt{\sqrt{(7^{4})^{2}}}$

$mg=\sqrt{7^{4}}$

$mg=\sqrt{(7^{2})^{2}}$

$mg=7^{2}$

$mg=49$