( 7^x - 11³) = 2⁵ . 2² + 200

7^x - 11³ = 128 + 200

7^x - 1331 = 328

7^x = 328 + 1331

7^x = 1659 

=> không có giá trị nào thoả mãn

( 7^x - 11³) = 2⁵ . 2² + 200

7^x - 11³ = 128 + 200

7^x - 1331 = 328

          7^x = 328 + 1331

          7^x = 1659 

=> không tồn tại x

`(7x-11)^3 =5^2 *2^5 +200`

`=>(7x-11)^3 =25*32+200`

`=>(7x-11)^3 =800+200`

`=>(7x-11)^3 =1000`

`=>(7x-11)^3 =10^3`

`=>7x-11=10`

`=>7x=10+11`

`=>7x=21`

`=>x=21:7`

`=>x=3`

Đề yêu cầu làm gì em?

Mọi người giúp. Em với ạ!!

(7x-11)³ = 1000(tính ra r nhé)

(7x-11)³ = 10³

7x-11 = 10

7x = 21

x = 3

(7x−11)3=25.52+200

(7�−11)3=800+200(7x−11)3=800+200

(7�−11)3=1000(7x−11)3=1000

(7�−11)3=103(7x−11)3=103

$\left(7x-11\right)=10$

$7x=21$

$x=3$

(7x - 11)^3 = 2^ 5 .5^2+200 = 1000

(7x - 11)^3 = 10^ 3

=> 7x - 11 = 10

=> 7x = 21 =>

x = 3 

(7x-11)^3=2^5.5^2+200

(7x-11)^3=1000

 7x-11     =10

 7x          =10+11

 7x          =21

  x           =21:7

  x           =3

Ta có:(7x-11)³=2⁵ * 5² + 200

     => (7x-11)³=32 * 25 + 200

     => (7x-11)³=800 + 200 

     => (7x-11)³=1000 = 10³

     => 7x-11 = 10 

     => 7x = 21

     => x = 3

(7x - 11 )^3 = 32*25+200

(7x - 11 ) ^3 = 1000 

(7x-11)^3 = 10^3 

=> 7x - 11 = 10 => 7x = 11 + 10 = 21 => x = 21 : 7 => x = 3 

bạn ơi là 2^5va5^2 bạn 

(7x-11)^3=2^5*5^2+200

(7x-11)^3 = 32 * 25 + 200 

(7x-11)^3 = 800 + 200 

(7x-11)^3 = 1000 

\(\left(7x-11\right)^3=2^5.5^2+200\)

\(\Leftrightarrow\left(7x-11\right)^3=1000\)

\(\Leftrightarrow7x-11=10\)

\(\Leftrightarrow7x=21\)

\(\Leftrightarrow x=3\)

\(\left(7x-11\right)^3=2^5.5^2+200\)

\(\Rightarrow\left(7x-11\right)^3=32.25+200\)

\(\Rightarrow\left(7x-11\right)^3=800+200\)

\(\Rightarrow\left(7x-11\right)^3=1000=10^3\)

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)

\(\left(7x-11\right)^3=2^5.5^2+200\)

\(\Rightarrow\left(7x-11\right)^3=32.25+200\)

\(\Rightarrow\left(7x-11\right)^3=800+200\)

\(\Rightarrow\left(7x-11\right)^3=1000=10^3\)

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)