0\\\\x(x-2)>0\\\\x_1=0,\; x_2=2\\\\+ + + + +(0)- - - - (2)+ + + + + \\\\x\in (-\infty,0)U(2,+\infty)" alt="y=lg(x^2-2x)\\\\OOF:\; x^2-2x>0\\\\x(x-2)>0\\\\x_1=0,\; x_2=2\\\\+ + + + +(0)- - - - (2)+ + + + + \\\\x\in (-\infty,0)U(2,+\infty)" align="absmiddle" class="latex-formula">