Решите неравенство \(\dfrac{9^x-3^{x+2}+20}{3^x-3}+ \dfrac{9^x-3^{x+2}+1}{3^x-9} \leqslant 2 \cdot 3^x-6.\)

• \(x \in \left(-\infty; 1\right) \cup \left( \log_3 7; 2 \right)\)
• \(x \in \left(-\infty; 1\right] \cup \left( \log_3 7; 2 \right)\)
• \(x \in \left(-\infty; 1\right] \cup \left[ \log_3 7; 2 \right]\)
• \(x \in \left(-\infty; 1\right) \cup \left[ \log_3 7; 2 \right)\)