Question

aratati ca 2^n+1-2^n trei puncte sus 2^n​

Answer 1

Explicație pas cu pas:

${2}^{n + 1} - {2}^{n} = {2}^{n} \cdot (2 - 1) = {2}^{n} \cdot 1 = {2}^{n} \red{ \bf \ \vdots \ {2}^{n}}$

q.e.d.