(x-7)^{2}" alt="(x+7)^{2}>(x-7)^{2}" align="absmiddle" class="latex-formula">
x^{2}-14x+49" alt="x^{2}+14x+49>x^{2}-14x+49" align="absmiddle" class="latex-formula">
49-49" alt="x^{2}+14x-x^{2}+14x>49-49" align="absmiddle" class="latex-formula">
0" alt="(x^{2}-x^{2})+(14x+14x)>0" align="absmiddle" class="latex-formula">
0" alt="28x>0" align="absmiddle" class="latex-formula">
0" alt="x>0" align="absmiddle" class="latex-formula">
Ответ: х ∈