Help with writing a program to find roots

I need help making a function file that can find the roots of a polynomial.

For example I need to find the roots of 2x^2 + 10x + 12.

I've started off the function:

function p = findroots(a, b, c)

I dont know what else to put after, I've tried so many different ways.

PLEASE HELP.

Answer 1

[Rick Rosson]

Please try:

   function p = findroots(a,b,c)

       d = sqrt(b^2 - 4*a*c);
       p =  (-b + [ -1  +1 ]*d) / (2*a);

   end

Alternatively:

   p = roots([ a b c ]);

HTH.

Rick

[Steven]

thank you