Question

log2(x+1)=log 8(x+1) срочно помогите

Answer 1

$log_2(x+1)=log_8(x+1), \ x+1 textgreater 0, x textgreater 1, \ log_2(x+1)=log_{2^3}(x+1), \ log_2(x+1)=frac{1}{3}log_2(x+1), \ log_2(x+1)=log_2(x+1)^frac{1}{3}, \ x+1=(x+1)^frac{1}{3}, \ ((x+1)^frac{1}{3})^2=1, \ left [ {{(x+1)^frac{1}{3}=-1,} atop {(x+1)^frac{1}{3}=1;}} right. left [ {{x+1=-1,} atop {x+1=1;}} right. left [ {{x=-2,} atop {x=0;}} right. \ xinvarnothing.$

Answer 2

можете в пятницу помочь