Quadratic Formula
Flashcard
•
Mathematics
•
9th Grade
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Quadratic Formula?
Back
The Quadratic Formula is used to find the solutions of a quadratic equation in the form ax² + bx + c = 0. It is given by x = (-b ± √(b² - 4ac)) / (2a).
Tags
CCSS.HSA-REI.B.4B
2.
FLASHCARD QUESTION
Front
What does the discriminant tell us?
Back
The discriminant (D) is the part of the quadratic formula under the square root: D = b² - 4ac. It indicates the nature of the roots of the quadratic equation.
Tags
CCSS.HSA-REI.B.4B
3.
FLASHCARD QUESTION
Front
What does a positive discriminant indicate?
Back
A positive discriminant indicates that the quadratic equation has two distinct real solutions.
Tags
CCSS.HSA-REI.B.4B
4.
FLASHCARD QUESTION
Front
What does a discriminant of zero indicate?
Back
A discriminant of zero indicates that the quadratic equation has exactly one real solution (a repeated root).
Tags
CCSS.HSA-REI.B.4B
5.
FLASHCARD QUESTION
Front
What does a negative discriminant indicate?
Back
A negative discriminant indicates that the quadratic equation has no real solutions, but two complex solutions.
Tags
CCSS.HSA-REI.B.4B
6.
FLASHCARD QUESTION
Front
Solve using the Quadratic Formula: 2x² + 7x - 15 = 0
Back
x = -5, 1.5
Tags
CCSS.HSA-REI.B.4B
7.
FLASHCARD QUESTION
Front
What is the value of the discriminant for the equation 4x² + 6x - 4 = 0?
Back
The discriminant is 100, indicating 2 solutions.
Tags
CCSS.HSA-REI.B.4B
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