Question

2la puterea x+5- 2 lax+4-2 la x+3-2la x+2-2 la x +1-2 la x =64

Answer 1

daca inteleg bine ce scrii ar fi cam asa
2^(x+5) -2^(x+4)-2^(x+3)-2^(x+2)-2^(x+1)-2^x=64
32 .2^x-16.2^x-8.2^x -4.2^x-2.2^x-2^x=64
2^x(32-16-8-4-2-1)=64
2^x.1=64
2^x=2^6
x=6