Question

va rog rezolvati ex 2 dau coroana​

Answer 1

Răspuns:

rezolvarea in foto mai jos

Answer 2

$\it 6=a+b|_{\cdot(a-b)} \Rightarrow 6(a-b)=(a+b)(a-b) \Rightarrow 6(a-b)=a^2-b^2 \Rightarrow \\ \\ \Rightarrow 6(a-b)=24|_{:6} \Rightarrow a-b=4\\ \\ \\ n=4+4^2+4^3+4^4=4(1+4+4^2+4^3)=4(1+4+16+64)=4\cdot85=340$