`#Shii`
`1/2 2^x + 4.2^x = 9 . 2^5`
`=> 2^x ( 1/2 + 4 ) = 9 . 32`
`=> 2^x ( 1/2 + 8/2 ) = 9 . 32`
`=> 2^x . 9/2 = 9 . 32`
`=> 2^x = 9 . 32 : 9/2`
`=> 2^x = 9 . 32 . 2/9`
`=> 2^x = 288 . 2/9`
`=> 2^x = 576/9`
`=> 2^x = 64`
`=> 2^x = 2^6`
`=> x = 6`
1/2 . 2^x + 4 . 2^x = 9 . 2⁵
2^x.(1/2 + 4) = 9.2⁵
2^x . 9/2 = 9 . 2⁵
2^x = 9 . 2⁵ : 9/2
2^x = 2⁶
x = 6
`1/2 . 2^x + 4 . 2^x = 9 . 2^5`
`=>(1/2 +4) . 2^x = 9 . 32`
`=> (1/2+8/2) . 2^x = 288`
`=> 9/2 . 2^x = 288`
`=> 2^x = 288 : 9/2`
`=> 2^x = 64`
`=> 2^x = 2^6`
`=> x=6`
Vậy `x=6`