log100x=log100+logx=2+logx
log10x=log10+logx=1+logx
log(x−1)=−logx
(2+logx)2+(1+logx)2=14−logx
(logx)2+4logx+4+(logx)2+2logx+1=14−logx düzenlersek
2(logx)2+7logx−9=0 2.derecedeb denklem gibi çözersek
(2logx+9)(logx−1)=0
logx1=−92 ⟶ x1=10−92
logx2=1 ⟶ x2=10 olur