Find all real zeros of the polynomial
P(x) = x^3+x^2-3x+1.
The polynomial factors into (X-1)(X^2+2x-1) which gives us the roots X= 1, X= -1+sqrt2, and X= -1-sqrt2. The "sqrt" means square root.
Hope it helps!
I changed the last root which I believe my answer is now correct.