Question

How do you simpligy `x^{6} - 5x^{3} - 14= 0`?

Answer 1

`x = root(3)7 and x = root(3)(-2)`

Explanation:

Let `u = x^3`, then the equation becomes:

`u² - 5u - 14 = 0`

`(u - 7)(u + 2) = 0`

`u = 7 and u = -2`

`x = root(3)7 and x = root(3)(-2)`