Find the discriminat of each quadratic equation then state the number and type of solutions

Hello:

the discriminat of each quadratic equation : ax²+bx+c=0 ... (a ≠ 0) is:

Δ = b² - 4ac

1) Δ > 0 the equation has two reals solutions : x = (-b±√Δ) / 2a

2) Δ = 0 : one solution : x = - b/2a

3) Δ < 0 : no reals solutions