`(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`

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1) \(\left(5+x\right)^2-36=0\)

\(\Rightarrow\left(5+x-6\right)\left(5+x+6\right)=0\Rightarrow\left(x-1\right)\left(x+11\right)=0\)

\(\Rightarrow\left[{}\begin{matrix}x=1\\x=-11\end{matrix}\right.\)

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

\(\Rightarrow7x-11=10\Rightarrow7x=21\Rightarrow x=3\)

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

\(\Rightarrow\left(7x-11\right)^3=\left(2\cdot5\right)^5+200=10^5+200\\ \Rightarrow\left(7x-11\right)^3=10000+200=10200\\ \Rightarrow7x-11=\sqrt[3]{10200}\\ \Rightarrow x=\dfrac{\sqrt[3]{10200}+11}{7}\)

( 7x - 11 )³ = 32 . 25 + 200

( 7x - 11 )³ = 800 + 200

( 7x - 11 )³ = 1000

( 7x - 11 )³ = 10³

=> 7x - 11 = 10

7x = 10 + 11

7x = 21

x = 21 : 7

x = 3

=>(7x-11)^3=800+200=1000=10^3

=>7x-11=10

=>7x=21=>x=3

 Vậy x=3

\(\left(7x-11\right)^3=2^5\times5^2+200\)

\(\left(7x-11\right)^3=32\times25+200\)

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

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

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

\(\Rightarrow7x-11=10\)

\(7x=10+11\)

\(7x=21\)

\(x=21\div7\)

\(x=3\)

(7x-11)^3=2^5x5^2+200

(7x-11)^3=32x25+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

Bài này nhiều người hỏi rồi nha

(7x-11)³=2⁵.5²+200

=>(7x-11)³=32.25+200

=>(7x-11)³=800+200

=>(7x-11)³=1000

=>(7x-11)³=10³

=>7x-11=10

=>7x=10+11

=>7x=21

=>x=21:7

=>x=3

vậy x=3

🌶🌶🌶🌶🌶

(7x-11)³=32.25+200

(7x-11)³=1000

(7x-11)³=10³

7x-11=10

7x=10+11

7x=21

x=21:7

x=3

vậy x = 3

k mình nha