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

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

\(\Leftrightarrow7x-11=10\)

\(\Leftrightarrow7x=21\)

\(\Leftrightarrow x=3\)

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

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

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

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

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)

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

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

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

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

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)

(7x-11)³ = 2⁵.5²+ 2³.5²

(7x-11)³ = 2³.5²( 2²+1)

(7x-11)³ = 2³.5³=(2.5)³ 

7x-11=10

x=3

ban anhduc1501 hinh nhu lam chua dung to nghi vay

(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 = 21

x = 3

\(\Leftrightarrow\left(7x-11\right)^3=32\cdot25+200=1000\)

=>7x-11=10

=>x=3

(7x−11)³ = 2⁵ . 5² + 200

(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

giúp mik ik mik tic cho

(7x−11)³ = 2⁵ . 5² + 200

(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

b) x^10=1x

=> x=0 ; 1

c)(2x-15)^5=(2x-15)^3

=> (2x-15)^4 = (2x-15)^2

=> (2x-15)^2 =1

=> 2x-15=1

=> x=8 

(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

cảm ơn bạn nha

làm như nào nhỉ

720 : [41-(2x-5)] =2^3 . 5

<=> 41-(2x-5)=720:40=18

<=> 2x-5=41-18=23

<=>2x=23+5=28

<=> x=28:2=14

2^x-15=17

<=> 2^x=17+15=32

<=> 2^x=2^5

<=> x=5

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

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

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

<=> 7x-11=10

<=> 7x=10+11=21

<=> x=21:7=3

2^x-15=17 nhe. Minh viet nham

(7x-11)³=2⁵.5²+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 = 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