(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

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

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

\(\Leftrightarrow7x-11=10\)

\(\Leftrightarrow7x=21\)

\(\Leftrightarrow x=3\)

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

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

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

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

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)

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

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

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

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

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)

Ta có: \(\left(7x-11\right)^3=2^5+5^2+200=1000\)

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

\(\Rightarrow7x-11=10\)

\(\Rightarrow7x=21\)

\(\Rightarrow x=3\)

Trả lời:

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

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

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

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

\(\Leftrightarrow7x-11=10\)

\(\Leftrightarrow7x=21\)

\(\Leftrightarrow x=3\)

Vậy\(x=3\)

Hok tốt!

Good girl

\(\left(7\text{x}-11\right)^3=2^5\text{ }.\text{ }5^2+200.\)

\(\left(7\text{x}-11\right)^3=32\text{ }.\text{ }25+200.\)

\(\left(7\text{x}-11\right)^3=800+200.\)

\(\left(7\text{x}-11\right)^3=1000.\)

\(\left(7\text{x}-11\right)^3=10^3.\)

\(\Rightarrow\text{ }\text{7x}-11=10.\)

\(\text{7x}=10+11\)

\(\text{7x}=21\)

\(x=21\div7\)

\(x=3\)

Vậy \(x=3\)

a.

\(\frac{2^5\times4^5\times5^{43}}{125^{44}}=\frac{2^5\times\left(2^2\right)^5\times5^{43}}{\left(5^3\right)^{44}}=\frac{2^5\times2^{10}\times5^{43}}{5^{132}}=\frac{2^{15}}{5^{89}}\)

b.

\(\frac{9^{24}}{27^{18}}=\frac{\left(3^2\right)^{24}}{\left(3^3\right)^{18}}=\frac{3^{48}}{3^{54}}=\frac{1}{3^6}=\frac{1}{729}\)

c.

\(\left(-\frac{2}{3}\right)^2+\left|-\frac{7}{8}\right|-\frac{11}{12}=\frac{4}{9}+\frac{7}{8}-\frac{11}{12}=\frac{29}{72}\)

Chúc bạn học tốt ^^

a) \(2^5.4^5.5^{43}:125^{44}=\frac{2^5.2^{10}.5^{43}}{5^{132}}=\frac{2^{15}}{5^{89}}\)

b) \(\frac{9^{24}}{27^{13}}=\frac{3^{42}}{3^{39}}=3^3=27\)

c) \(\left(\frac{-2}{3}\right)^2+\left|\frac{-7}{8}\right|-\frac{11}{12}=\frac{4}{9}+\frac{7}{8}-\frac{11}{12}\)

Sau đó quy đồng lên đươc kết quả là \(\frac{29}{72}\)

Chúc bạn làm bài tốt

câu b hình như bạn chép nhầm đề bài

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 

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+ 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