Question

Ajutati-mā va rog!! Urgent!

Answer 1

a)
A+2= 2+2+2^2+2^3+2^4+2^5+2^6=2*(1+1+2+2^2+2^3+2^4+2^5)=2*(2+2+2^2+2^3+2^4+2^5)=2*2*(1+1+2+2^2+2^3+2^4)=2*2*(2+2+2^2+2^3+2^4)=2*2*2*(1+1+2+2^2+2^3)=2*2*2*(2+2+2^2+2^3)=2*2*2*2*(1+1+2+2^2)=2*2*2*2*(2+2+2^2)=2*2*2*2*2*(1+1+2)=2*2*2*2*2*(2+2)=2*2*2*2*2*2*(1+1)=2*2*2*2*2*2*2=2^7

b) A+2^7+2^8+2^9+2^10=2*x-2 => A+2+2^7+2^8+2^9+2^10=2*x.
Din a) stim ca A + 2= 2^7 => 2^7+2^7+2^8+2^9+2^10=2*x => 2*2^7+2^8+2^9+2^10=2*x => 2^8+2^8+2^9+2^10=2*x => 2*2^8+2^9+2^10=2*x => 2^9+2^9+2^10=2*x => 2*2^9+2^10=2*x => 2^10+2^10=2*x => 2*2^10=2*x => x=(2*2^10)/2 => x=2^10.