345x2-107x2=690-214=476 hoặc bạn nhóm 2 ra ngoài

425x3-17x3=1275-51=1124 hoặc nhóm 3 ra ngoài

108x6-108x2=648-216=432 hoặc nhóm 108 ra

:))))))))))) dễ mà

3^x+3^x+1=108

3^x.1 + 3^x.3¹ = 108

(1+3¹).3^x = 108

4.3^x = 108

3^x = 108:4

3^x = 27

3^x = 3³ (vì 27 = 3³)

Vậy x = 3

3^x(1+3)=108

3^x=27

=)x=3

=> 3^x + 3^x * 3 = 108 <=> 3^x (3+1) = 108 <=> 4*3^x =108 <=> 3^x = 27 <=> 3^x =3³ <=> x=3

vậy x=3

\(3^x+3^{x+1}=108\)

\(\Rightarrow3^x+3^x.3=108\)

\(\Rightarrow3^x.\left(1+3\right)=108\)

\(\Rightarrow3^x.4=108\)

\(\Rightarrow3^x=27\)

\(\Rightarrow3^x=3^3\)

\(\Rightarrow x=3\)

Vậy \(x=3\)

3^x + 3^x+1 = 108

3^x + 3^x . 3 = 108

3^x . (1 + 3) = 108

3^x . 4 = 108

3^x = 108 : 4

3^x = 27

3^x = 3³

=> x = 3

\(3^x+3^{x+1}=108\)

\(\Rightarrow3^x.1+3^x.3^1=108\)

\(\Rightarrow3^x.\left(1+3^1\right)=108\)

\(\Rightarrow3^x.4=108\)

\(\Rightarrow3^x=108:4\)

\(\Rightarrow3^x=27\)

\(\Rightarrow3^x=3^3\)

\(\Rightarrow x=3\)

Vậy \(x=3.\)

Chúc bạn học tốt!

3^x+3^x+1=108

<=>3^x+3^x.3=108

<=>3^x(1+3)=108

<=>3^x.4=108

<=>3^x=108:4

<=>3^x=27

<=>3^x=3³

=>x=3

Vậy x=3

Chúc bạn học tốt

 3 ^x + 3 ^x+1  = 108

3 ^x  ( 1 + 3 ) = 108

3 ^x              = 27

3 ^x              = 3³

=> x = 3

\(3^x+3^x\times3^1=108\)

\(3^x\times\left(1+3\right)=108\)

\(3^x\times4=108\)

\(3^x=108\div4\)

\(3^x=27\)

\(3^x=3^3\)

\(\Rightarrow\) \(x=3\)

3^x.(3+1)=108

3^x= 108 : 4

3^x= 27

=> 3^x= 3^3

=>x=3

\(3^x+3^x.3^1=108\)

\(3^x.\left(3^1+1\right)=108\)

\(3^x.4=108\)

\(3^x=108:4\)

\(3^x=27=3^3\)

\(\Rightarrow x=3\)

3^xx1+3^xx3¹=108

3^xx[1+3¹]=108

3^xx4=108

3^x=108:4=27

3^x=3³

Vậy x=3

\(3^{x+1}+3^x=108\)

\(3^x\cdot3+3^x=108\)

\(3^x\cdot\left(3+1\right)=108\)

\(3^x=27=3^3\)

\(\Rightarrow x=3\)

\(3^{x+1}+3^x=108\)

(=)\(3^x.3+3^x=108\)

(=)\(3^x.\left(3+1\right)=108\)

(=)\(3^x.4=108\)

(=)\(3^x=27\)

(=)\(3^x=3^3\)

=>x=3

3^x+1 + 3^x = 108

3^x.(3+1) = 108

3^x = 27 = 3³

=> x = 3