Question

aflati x din egalitatea 2 la puterea x+2+2 la puterea x+1+2 la puterea x=112

Answer 1

[tex]2^{x+2}+2^{x+1}+2^x=112\\ 2^x(2^2+2^1+1)=112\\ 2^x\cdot7=112\\ 2^x=112:7\\ 2^x=16\\ 2^x=2^4\\ x=4[/tex]