Linear Equation an Polynomial

[AS_9781967]

Hi everyone,
I’m trying to determine whether Mathcad Prime can symbolically or numerically solve:

• a single 3rd-order (cubic) polynomial, 
• a simple system of four linear equations with four unknowns.

Are there built-in functions or recommended workflows for this in Mathcad Prime,  Any examples or best practices would be appreciated.

Thanks!

[LucMeekes]

Numerically should be no problem. For the cubic solution use the root() function or a solve block.

For a set of equations use lsolve() or a solve block.

Symbolically try this:

(That is: 

)

and this:

(That is: 

)

But you may get the trouble indicated here:

https://community.ptc.com/t5/Mathcad/The-symbolic-result-returned-is-too-large-to-display/m-p/750983 

Success!
Luc

[ttokoro]