0}} \right. \; \left \{ {{3x\leq 8} \atop {x>7}} \right. \; \left \{ {{x\leq 2\frac{2}{3}} \atop {x>7}} \right.\; \; \Rightarrow \; \; x\in \varnothing " alt=" \sqrt{8-3x}+\frac{5x^2-1}{\sqrt{x-7}}\\\\\left \{ {{8-3x\geq 0} \atop {x-7>0}} \right. \; \left \{ {{3x\leq 8} \atop {x>7}} \right. \; \left \{ {{x\leq 2\frac{2}{3}} \atop {x>7}} \right.\; \; \Rightarrow \; \; x\in \varnothing " align="absmiddle" class="latex-formula">
