Question

250 - (2x -10) mu 3 =125

Answer 1

250 - ( 2x - 10 ) ³ = 125

         ( 2x - 10 ) ³ = 125

         ( 2x - 10 ) ³ = 5 ³

=>   2x - 10 = 5

             2x  = 15

               x  = 7,5

Answer 2

250 - (2x -10)³ =125

=> (2x -10)³ = 250 - 125

=> (2x -10)³ =125

=> (2x -10)³ =5³

=> 2x -10 =5

=> 2x =5 + 10

=> 2x = 15 

=> x = 15 : 2

=> x = 7,5

Answer 3

\(205-\left(2x-10\right)^3=125\)

\(\Rightarrow\left(2x-10\right)^3=125\)

\(\Rightarrow\left(2x-10\right)^3=5^3\)

\(\Leftrightarrow2x-10=5\)

\(\Rightarrow2x=15\)

\(\Rightarrow x=\frac{15}{2}\)

vậy x= \(\frac{15}{2}\)

Answer 4

250 - (2x - 10)³ = 125

         (2x - 10)³ = 250 - 125

         (2x - 10)³ = 125

         (2x - 10)³= 5³

     => 2x - 10 = 5

          2x        = 5 + 10 = 15

          x          = 15 : 2 = 7\(\frac{1}{2}\)