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The discriminant can be used to determine the nature of the solutions to the quadratic equation.
The discriminant is:
this is just the part under the radical of the quadratic formula:
If the discriminant is negative, the solutions are not real, you have two complex conjugate roots.
If the discriminant is positive, the two roots are real.
If the discriminant is zero, you have one real root (a double root)
Let's check the discriminant of your quadratic equation.
The disriminant is positive, therefore, there are two real roots. What are they?