log 3(x-3)+0.631=3.322
log3(x-3)=3.322-0.631
log3(x-3)=2.691
x-3=3^(2.691)
x=19.23+3=22.23
<span>2а-ас-2с+с^2=c(c-a)-2(c-a)=(c-a)(c-2)</span>