Question

tìm x 

(2x+1)^3=125

Answer 1

(2x + 1)³ = 125

=> (2x + 1)³ = 5³

=> 2x + 1 = 5

=> 2x = 5 - 1

=> 2x = 4

=> x = 4 : 2

=> x = 2

Vậy x = 2

Answer 2

( 2x + 1 )³ = 125

( 2x + 1 )³ = 5³

=> 2x + 1 = 5

     2x   = 5 - 1

      2x  =   4

      x = 4 : 2

      x =    2

Answer 3

x=2

Answer 4

\(\left(2x+1\right)^3=125\)

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

\(\Rightarrow2x+1=5\)

\(\Rightarrow2x=4\)

\(\Rightarrow x=2\)

Answer 5

( 2x + 1 )\(^3\)= 125

( 2x + 1 )\(^3\) = 5\(^3\)

\(\Rightarrow\) 2x + 1 = 5

2x = 5 - 1

2x = 4

x = 4 : 2 = 2

Vậy x = 2

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