Question

Rezolvati ecuatia 2 la puterea x+1 - 2 la puterea x=28

Answer 1

$2^{x+1}-2^x=28\\ \\ 2^x(2-1)=28\\ \\ 2^x=28\\ \\ Logaritmezi~acum:\\ \\ xlog_22=log_228\\ \\ x=1+log_27.\\ \\ Acum,~multe~carti~zic~sa~cauti~valoarea~lui~log_27~care~e~2.80~(ceva~de~genul).\\ \\ Eu~zic~sa~lasi~rezultatul~asa.$