Log (x+6) по основанию х =2
log (2+6)= log (8)= 3
2 2
log (2+6)= log (8)= 3 ......2................ 2
log(x) x+6 = log(2) 2+6 = log(2)8 =log(2) 2^3 = 3log(2)2=3