Question

Buna...efectuati (3^7+2 x 3^7+2 x 3^8):3^8

Answer 1

Hei! :)

$\frac{3^{7} +2*3^{7} +2*3^{8} }{3^{8}} =\\=\frac{3*3^{7}+2*3^{8}}{3^{8}} =\\=\frac{3^{8}+2*3^{8}}{3^{8}}= \\=\frac{3*3^{8}}{3^{8}}=3$