Factoring Parametric Polynomials

[Wild_B]

Hello all,

With an exam coming out my teacher ask to see my calculator to test its capacity at resolving a command.

I would like to factor parametric polynomial expressions. Ex : x^2-k in relation to x
would anyone know how to do this? or even factor expressions with multiple variables?
For information a TI inspire does this perfectly. on TI inspire this is the command: factor(x^2-k,x)

Thank you for any help that you could provide.

P.S. I dont seem to be able to do it with microsoft math either