Question

If x²-2=2⅔ +2-⅔
then prove that 2x³-6x =5 solve and send photo please​

Answer 1

`x1 = - √(6) \\ x2 = √(6)`

Explanation:

`x ^(2) - 2 = (8)/(3) + 2 - (2)/(3)`

`x^(2) - 2 = 4`

`x^(2) = 4 + 2`

`x^(2) = 6`

`x = - √(6) \\ x = √(6)`

`x1 = - √(6) \\ x2 = √(6)`

Answer 2

Explanation:

x²-2=2⅔ +2-⅔

x^2 = 2^1 + 2⅔ +2-⅔

x^2 = 4.21736

x = 2.0536.

Plug this into 2x^3 - 6x:

= 2(2.0536)^3 - 6(2.0536)

= 5

So 2x^3 - 6x = 5.