Question

Ajutor dau 100 puncte!!!!​

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

$\it a)\ \dfrac{13^{n+1}+13^n}{7^{n+1}+7^{n+2}}=\dfrac{13^n(13+1)}{7^n(7+7^2)}=\dfrac{\ \ 13^n\cdot14^{(14}}{7^n\cdot56}=\dfrac{13^n}{7^n\cdot4}$

$\it b)\ \ =\dfrac{11^n(11^2-11+1)}{5^n(5^2+2\cdot5+2)}=\dfrac{\ \ 11^n\cdot111^{(37}}{5^n\cdot37}=\dfrac{11^n\cdot3}{5^n}$