2 x 2 2x-3 0 where a1 b2 and c -3. Calculator determines whether the discriminant b 2 4 a c is less than greater than or equal to 0. B b 2 4 a c.
P 2 460P 42000 0.
If it is positive the equation has two real roots. When b 2 4 a c 0 there is one real root. The quadratic formula is in this format. Solve quadratic equations using the quadratic formula.