How to solve x^4-p*x+q.solve for x considering p and q as constants

Solve for x taking p and q as conntants

[Dimitris Kalogiros]

I wonder whether your equation is

 x^4-p*x^2+q =0

or if it is

x^2-p*x^2+q=0

Since, I thing that what you gave has no analytical solution if p,q are being considered as parameters.

Answer 1

[Bruno Luong]

roots([1,0,0,-p,q])

Answer 2

[Basil C.]

Here is a better way to implement when you only have the equation given

 syms x
 %define the value of p and q
 y=x^4-p*x+q;
 C=double(coeffs(y,'All'));
 answer=roots(C)