Question

Tìm X

3 ^{x + 6} = 37

25 x² = 25

8^{x - 3 = 1}

 

 

 

 

 

Answer 1

\(25\cdot x^2=25\\ x^2=25\div25\\ x^2=1\\ x^2=1^2\\ x=1\\ 8^{x-3}=1\\ 8^{x-3}=8^0\\ x-3=0\\ x=0+3\\ x=3\)

Answer 2

`@` `\text {Ans}`

`\downarrow`

\(3^{x+6}=37\)

`=>`\(3^x\cdot3^6=37\)

`=>`\(3^x=37\div3^6\)

`=>` \(3^x=\dfrac{37}{729}\) 

Bạn xem lại đề.

\(25x^2=25\)

`=>`\(x^2=25\div25\)

`=>`\(x^2=1\)

`=> x=1`

\(8^{x-3}=1\)

`=>`\(8^x\div8^3=1\)

`=>`\(8^x=8^3\)

`=> x=3`