If a, b, c are the roots of equation&nbsp;<span class="math-tex">\(x^3-3x^2 + 3x + 7=0\)</span>, then the value of&nbsp;<span class="math-tex">\(\begin{vmatrix} 2bc-a^2 &amp; c^2 &amp; b^2 \\\ c^2 &amp; 2ac-b^2 &amp; a^2 \\\ b^2 &amp; a^2 &amp; 2ab-c^2 \end{vmatrix}\)</span>&nbsp;is