Question

(2.x-3)^3-13=112

 

Answer 1

(2.x-3)^3=112+13

(2.x-3)^3=125

=> (2.x-3)^3=125=5^3

=>(2.x-3)=5

=>2x=5+3

=>2x=8

=>x=8:2

=>x=4

Vậy x= 4

Answer 2

( 2x - 3 ) ^ 3 - 13 = 112

( 2x - 3 ) ^ 3        = 125

( 2x - 3 ) ^ 3        = 5 ^ 3

=> 2x - 3 = 5

        2x   = 8

          x   = 4
 

Answer 3

(2x-3)^3=112+13

(2x-3)^3=125

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

2x-3=5

còn lại cậu tự giải