x-1" alt="x-4x^2>x-1" align="absmiddle" class="latex-formula">
-1 /:(-4)" alt="-4x^2>-1 /:(-4)" align="absmiddle" class="latex-formula">
1/4" alt="x^2>1/4" align="absmiddle" class="latex-formula">
0.25" alt="x^2>0.25" align="absmiddle" class="latex-formula">
x∈(-∞;-0.5)∪(0.5;+∞).