Question

Cum se rezolva 3 la puterea 0+3 la-1 + 3 la -2?

Answer 1

$3^0+3^{-1}+3^{-2}= 1+\dfrac{1}{3^1}+\dfrac{1}{3^2} =1+\dfrac{1}{3} +\dfrac{1}{9}= \dfrac{13}{9}$