Question

(7x -11) ³ = 2⁵ . 5² + 100 + 100

giúp mik với

Answer 1

=>(7x-11)³=25x32+200=1000

=>7x-11=10

=>7x=21

hay x=3

Answer 2

(7x - 11)³ = 32 . 25 + 100 + 100

(7x - 11)³ = 800 + 100 + 100

(7x - 11)³ = 1000

(7x - 11)³ = 10³

7x - 11 = 10

7x = 10 + 11 

7x = 21 

x = 21 : 7

x = 3

vậy x = 3

Answer 3

`(7x -11)^3 = 2^5 . 5^2 + 100 + 100`

`<=>(7x -11)^3 = 2^5 . 5^2 + 200`

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

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

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

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

`<=>7x - 11 = 10`

`<=> 7x=21`

`<=> x=21:7`

`<=> x=3`