6.8^x-1+8^x+1=6.8^19+8^21 5.2^x+3.2^x+2=5.2^5+3.2^7 4.3^x-1+2.3^x+2=4.3^6+2.3^9 11.6^x-1+2.6^x+1=11.6^11+2.6^13

Các câu hỏi liên quan