1\\x^2-7x>0\\x<0,x>7\\x^2-7x>8\\x^2-7x-8>0\\x^2-7x-8=0\\a-b+c=0\\x_1=-1\\x_2=8\\(x+1)(x-8)>0\\\left \{ {{x<-1,x>8} \atop {x<0,x>7}} \right. \\x<-1,x>8 " alt=" log_8(x^2-7x)>1\\x^2-7x>0\\x<0,x>7\\x^2-7x>8\\x^2-7x-8>0\\x^2-7x-8=0\\a-b+c=0\\x_1=-1\\x_2=8\\(x+1)(x-8)>0\\\left \{ {{x<-1,x>8} \atop {x<0,x>7}} \right. \\x<-1,x>8 " align="absmiddle" class="latex-formula">
Система с учётом ОДЗ