\(\Leftrightarrow6^x\cdot1+6^x\cdot6+6^x\cdot36=1548\)
\(\Leftrightarrow6^x=36\)
hay x=2
`6^x+6^(x+1)+6^(x+2)=1548`
`=>6^x +6^x .6+6^x .6^2=1548`
`=>6^x .(1+6+6^2)=1548`
`=>6^x .43=1548`
`=>6^x =1548:43`
`=>6^x=36=6^2`
`=>x=2`
`6^x + 6^(x+1) + 6^(x+2) = 1548`
`=> 6^x ( 1+ 6+6^2) = 1548`
`=> 6^x . 43 = 1548`
`=> 6^x = 1548/43 = 36`
`=> 6^x = 6^2 <=> x=2`
`6^x + 6^(x+1) + 6^(x+2) = 1548`
`=> 6^x + 6^x xx 6 + 6^x xx 6^2 = 1548`
`=> 6^x xx(1 + 6 + 6^2 ) = 1548`
`=> 6^x xx 43 = 1548`
`=> 6^x = 1548 : 43`
`=> 6^x = 36`
`=> 6^x = 6^2`
`=> x = 2`
