LOG4(7x+10)=LOG4(5)+2
LOG4(7x+10)=LOG4(5)+LOG4(4²)
LOG4(7x+10)=LOG4(5×16)
LOG4(7x+10)=LOG4(80)
ОДЗ х>-10/7
7х+10=80
х=10
LOG4(7x+10)=LOG4(5)+2
LOG4(7x+10)=LOG4(5)+LOG4(4²)
LOG4(7x+10)=LOG4(5×16)
LOG4(7x+10)=LOG4(80)
ОДЗ х>-10/7
7х+10=80
х=10