Question

(1/3)^5х-1 +(1/3)^5х=4/9
Объясните, подвлуйста!!!

Answer 1

$frac{1}{3} ^{5x-1} + frac{1}{3} ^{5x} = frac{4}{9}$
$frac{1}{3} ^{5x} ( frac{1}{3} ^{-1} +1)= frac{4}{9} ; frac{1}{3} ^{5x} = frac{1}{9} = frac{1}{3} ^{2} ; 5x=2;x=0.4;$

Answer 2

Х=2,5?

Answer 3

0.4