Calculate the discriminant and use it to determine how many real-number roots the equation has.
3x^2 - 6x + 1 = 0
three real-number roots
two real-number roots
one real-number root
no real-number roots
3x^2 - 6x + 1 = 0
three real-number roots
two real-number roots
one real-number root
no real-number roots