Answer:
Solutions have 2 real roots.
Step-by-step explanation:
Discriminant determines the solutions of quadratic equation.
If the value of discriminant is greater than 0 or D > 0 or D is positive then there are 2 real roots.
If the value of discriminant is 0, there is one real root.
If the value of discriminant is less than 0 or in negative then there are no real roots.
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Discriminant can be found using:

The discriminant derives from Quadratic Formula.

Now you should know why D > 0 gives 2 real roots because of ± which determines 2 solutions.
D = 0 gives one real root because x would be -b/2a
D < 0 gives no real roots because in square root, the value is negative which does not exist in real number.