1)
2\\ b>5\end{cases} \Rightarrow \begin{cases} 3a>6\\ 2b>10\end{cases}" alt="\begin{cases} a>2\\ b>5\end{cases} \Rightarrow \begin{cases} 3a>6\\ 2b>10\end{cases}" align="absmiddle" class="latex-formula">
10+6" alt="3a+2b>10+6" align="absmiddle" class="latex-formula">
16" alt="3a+2b>16" align="absmiddle" class="latex-formula">
2)
2\\ b>5\end{cases} \Rightarrow ab>10" alt="\begin{cases} a>2\\ b>5\end{cases} \Rightarrow ab>10" align="absmiddle" class="latex-formula">
10-1" alt="ab-1>10-1" align="absmiddle" class="latex-formula">
9" alt="ab-1>9" align="absmiddle" class="latex-formula">
3)
2\\ b>5\end{cases} \Rightarrow \begin{cases} a^2>4\\ b^2>25\end{cases}" alt="\begin{cases} a>2\\ b>5\end{cases} \Rightarrow \begin{cases} a^2>4\\ b^2>25\end{cases}" align="absmiddle" class="latex-formula">
4+25" alt="a^2 + b^2>4+25" align="absmiddle" class="latex-formula">
29" alt="a^2+b^2>29" align="absmiddle" class="latex-formula">