(3x-2)^5=-243

=> (3x-2)⁵=(-3)⁵

=> 3x-2=-3

=> 3x=-3+2

=> 3x=-1

=> x=-1/3

(3x-2)⁵ = -243

<=> (3x-2)⁵ = (-5)⁵

<=> 3x-2= -5

<=> 3x =-5+2=-3

<=> x= -1

- 3⁵= - 243 => 3x-2= - 3 =>  x= cậu tự tính nha!

ta có : -243 = (-3)^5 

=> 3x -2 =-3

<=>3x =-3 +2 

<=>3x = -1 ( âm một)

<=>x = -1÷3 

=> x=-1/3

Vậy x=-1/3

ta có : -243 = (-3)^5 

=> 3x -2 =-3

<=>3x =-3 +2 

<=>3x = -1 ( âm một)

<=>x = -1÷3 

=> x=-1/3

Vậy x=-1/3

(3x - 2)⁵ = -243

=> (3x - 2)⁵ = (-3)⁵

=> 3x - 2 = -3

=> 3x = -1

=> x = -1/3

( 3x - 2 ) ^ 5 = ( -3 )^ 5

<=> 3x - 2 = -3

<=> 3x = -3 + 2

<=> 3x = -1 

<=> x = -1 / 3 

x=1/3

(3x-2)^5=-243=-3^5

=>3x-2=-3

=>x=-1/3

\(\left(3x-2\right)^5=243\)

\(\left(3x-2\right)^5=3^5\)

\(\Rightarrow3x-2=3\)

\(\Rightarrow3x=5\)

\(\Rightarrow x=\frac{5}{3}\)

vậy \(x=\frac{5}{3}\)

tiểu thư song ngư học tốt

( 3x - 2 )⁵ = 243

( 3x -2  )⁵ = 3⁵

=> 3x - 2 = 3

=> 3x = 5

=> x = 5/3

Ta có : 243 = -3^5

=> 3^x - 2 = -3

<=> 3x = -3 + 2

<=> 3x = -1

<=> x = -1 : 3

=> x = 1/3

Chắc chắn 100%

a) 3⁵= 243

b)5³=125

tiếp theo bn tự tính nhé

a) \(\left(2x-1\right)^5=243\)

\(\left(2x-1\right)^5=3^5\)

\(\Rightarrow2x-1=3\)

\(2x=3+1\)

\(2x=4\)

\(x=\frac{4}{2}\)

\(x=2\)

Vậy .......

b) \(\left(3x+2\right)^3=125\)

\(\left(3x+2\right)^3=5^3\)

\(\Rightarrow3x+2=5\)

\(3x=5-2\)

\(3x=3\)

\(x=\frac{3}{3}=1\)

Vậy ..........

\(\left(3x-2\right)^5=-243\)

\(\Leftrightarrow\left(3x-2\right)^5=-3^5\)

\(\Leftrightarrow3x-2=-3\)

\(\Leftrightarrow3x=-1\)

\(\Leftrightarrow x=-\frac{1}{3}\)

\(\left(3x-2\right)^5=-243\)

\(\Leftrightarrow\left(3x-2\right)^2=\left(-3\right)^5\)

\(\Rightarrow3x-2=-3\)

\(\Rightarrow3x=-3+2\)

\(\Rightarrow3x=-1\)

\(\Rightarrow x=-\frac{1}{3}\)

\(\left(3x-2\right)^5=-243\)
\(\Leftrightarrow\left(3x-2\right)^5=-3^5\)
\(\Leftrightarrow3x-2=-3\)
\(\Leftrightarrow3x=-1\)
\(\Leftrightarrow x=\frac{-1}{3}\)
\(\text{Vậy }x=\frac{-1}{3}\)