Discriminant
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the discriminant in a quadratic equation?
Back
The discriminant is the expression b² - 4ac in the quadratic formula, which determines the nature of the roots.
2.
FLASHCARD QUESTION
Front
If the discriminant is positive, how many real solutions does the quadratic equation have?
Back
2 real solutions.
3.
FLASHCARD QUESTION
Front
If the discriminant is zero, how many real solutions does the quadratic equation have?
Back
1 real repeated solution.
4.
FLASHCARD QUESTION
Front
If the discriminant is negative, how many real solutions does the quadratic equation have?
Back
0 real solutions (2 imaginary solutions).
5.
FLASHCARD QUESTION
Front
What does a discriminant of 25 indicate about the roots of the quadratic equation?
Back
It indicates that there are 2 distinct real roots.
6.
FLASHCARD QUESTION
Front
What does a discriminant of -3 indicate about the roots of the quadratic equation?
Back
It indicates that there are 2 imaginary roots.
7.
FLASHCARD QUESTION
Front
For the quadratic equation y = x² + 4x + 4, what is the value of the discriminant?
Back
0 (the roots are real and repeated).
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