Question

If x is equal to 2 minus root 3 find the value of x minus one upon X whole cube

Answer 1

"2 minus root 3"  =>  2 - sqrt(3)

x does not appear here.  That could cause a problem.  

Unsure of what you mean by "x minus one upon X whole cube."  Would you please go back to the original question and ensure that you have copied it down precisely.  Without "x" in your equation, there's nothing to solve for.