Chắc đề tìm x em nhỉ?
\(2^6+\left(5+x\right)=3^4\\ \Leftrightarrow64+5+x=81\\ \Leftrightarrow x=81-64-5=12\)
\(2^6+\left(5+x\right)=3^4\)
\(64+\left(5+x\right)=81\)
\(5+x=81-64\)
\(5+x=17\)
\(x=17-5\)
\(x=12\)
`2^6 + (5+x) = 3^4`
`64 + 5 + x = 81`
`79 + x = 81`
`x = 2`
26+ (5 + x) = 34
64 + (5 + x) = 81
5 + x = 81 - 64 = 17
x = 17 - 5 = 12
e) 26 + ( 5 + x ) = 34
64 + ( 5 + x ) = 27
( 64 + 5 ) + x = 81
69 + x = 81
x = 81 - 69
x = 12
