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