a) \(3^{x-1}+3x+3^{x+1}=1053\)

\(=3^x:3+3^x+3^x.3=1053\)

\(=3^x.\dfrac{1}{3}+1+3=1053\)

\(=3^x.\dfrac{13}{5}=1053\)

\(=3^x=243\)

\(\Rightarrow x=5\)

Vậy \(x=5\)

5^x . (5³)² = 625

5^x . 5⁶ = 5⁴

5^x+6  = 5⁴

=> x + 6 = 4

=> x = 4 - 6

x = -2

Vậy x = -2

Ủng hộ mk nha !!!! ^_^

5^x . (5³)² = 625

5^x . 5⁶ = 5⁴

5^x = 5⁴ : 5⁶

5^x =

5^x . ( 5³ )²  =625

5^x . 5⁶ = 5⁴

5^{x + 6}  = 5⁴

x + 6 = 4

x = 4 - 6

x = -2

( 3/7 ) 5 x ( 7/3 ) - 1 x ( 5/3 )6 : ( 343/652) - 2

= ( 3/7 x 7/3 ) + 5 - 1 x ( 5/3 : 343/652 ) - 2

= 1 + 5 - 1 x 2 - 1715/1956

= 6 - 2 - 1715/1956

=4 - 1715/1956

= 6109/1715

bn ê, đề là j vậy,sao mk đọc mà ko hỉu

ban ghi gi the (3/7)5 nghia la gi

=> 5^x . 5⁶ = 5⁴

=> 5^x = 5⁴ : 5⁶

=> 5^x = 5^4-6

=> 5^x = 5^-2

=> x = -2

Mình k chép lại đề bài nữa nha!

5^x . 5⁶ =625

5^x+6= 5⁴

=>x+6=4

=> x=-2

vậy x=-2

\(5^x\cdot\left(5^3\right)^2=625\\ \Leftrightarrow5^x\cdot5^6=5^4\\ \Leftrightarrow5^x=\dfrac{5^4}{5^6}\\ \Leftrightarrow5^x=\dfrac{1}{5^2}\\ \Leftrightarrow5^x=5^{-2}\\ \Leftrightarrow x=-2\)

Vậy \(x=-2\)

\(5^x\cdot\left(5^3\right)^2=625\)

\(5^x\cdot5^6=5^4\)

\(5^x=5^4:5^6\)

\(5^x=5^{-2}\)

\(x=-2\)

Vậy \(x=-2\).

A.5x. (5^3)^2=625

5x= 1/25

x=125

5^x.5^6=5^3

5^x.(5³)²=625

=> 5^x.5⁶=5⁴

=> 5^x=5⁴:5⁶

=> 5^x=5^-2

=> x=-2

Vậy x=-2

\(^{=>5^x.5^6=5^4}\)

=> \(5^x=5^{4-6}\)

=>x=-2

Sai đề nha bạn

5^x.5^6=5^4

5^x=5^4:5^6

5^x= tap hop rong

Suy ra x= tap hop rong

\(5^x.\left(5^3\right)^2=625\)

\(5^x.5^6=5^4\)

\(5^x=5^4\text{ }:\text{ }5^6\)

\(5^x=5^{-2}\)

\(\Rightarrow\text{ }x=-2\)