Question

4^x+1 * 4^{x =} 4²⁰¹⁷

Answer 1

4^x+x+1=4^2017

4^2x+1=4^2017

suy ra 2x+1=2017

           2x=2017-1

          2x=2016

           x=2016/2

         x=1008

Answer 2

ta có 

(4^x+x+1)=4^2017

nên suy ra

x+x+1=2017

x2=2016

nên x=1008

Answer 3

4^x+1.4^x = 4²⁰¹⁷

=> 4^x+1+x = 4²⁰¹⁷

=> 4^2x+1 = 4²⁰¹⁷

=> 2x+1 = 2017

=> 2x = 2017 - 1

=> x = 2016 : 2

=> x = 1008