Solve Function not working properly

Hello I am new to matlab and am having a lot of difficulty solving a simple algebraic equation. I want to solve:

X^3-6X^2+18=0 for X which should be the value 2 however matlab is providing me with a very different answer. The code i am typing is:

solve(x.^3-6*X.^2+18,X)

and the answer is as follows:

ans=

-2.941250671603633621189774
1.230510698487091567868454 - 2.588291611086283205444294848*i

and continues to repeat with similar integers for a number of lines.

Any help is appreciated. Thanks!

Answer 1

[Azzi Abdelmalek]

syms x
sol=solve(x.^3-6*x.^2+18) 
sol=subs(sol)

Answer 2

[Walter Roberson]

2 is not the solution for that, even if we read "6X^2" as possibly meaning (6X)^2. 2 is, however, a solution for

x^3-6*x^2+16