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If the discriminant of a quadratic equation is 4, then the equation has .

If the discriminant of a quadratic equation is -2, then the equation has .

If the discriminant of a quadratic equation is 0, then the equation has .

If the discriminant of a quadratic equation is 2, then the equation has .

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Box 1: Select the best answer

Two rational solutions

Box 2: Select the best answer

2 non-real solutions

Box 3: Select the best answer

One real solution

Box 4: Select the best answer

Two irrational solutions