All methods of solving quadratic equations

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•
Mathematics
•
8th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a quadratic equation?
Back
A quadratic equation is a polynomial equation of the form ax² + bx + c = 0, where a, b, and c are constants and a ≠ 0.
2.
FLASHCARD QUESTION
Front
What are the methods to solve quadratic equations?
Back
1. Factoring 2. Completing the square 3. Quadratic formula 4. Graphing
3.
FLASHCARD QUESTION
Front
What is the quadratic formula?
Back
The quadratic formula is x = (-b ± √(b² - 4ac)) / (2a), used to find the roots of a quadratic equation.
4.
FLASHCARD QUESTION
Front
How do you complete the square for the equation x² - 6x + 5 = 0?
Back
1. Move the constant to the other side: x² - 6x = -5 2. Add (6/2)² = 9 to both sides: x² - 6x + 9 = 4 3. Factor: (x - 3)² = 4 4. Solve: x - 3 = ±2, so x = 5 or x = 1.
5.
FLASHCARD QUESTION
Front
What does it mean to factor a quadratic equation?
Back
Factoring a quadratic equation means expressing it as a product of two binomials, such as (x - p)(x - q) = 0, where p and q are the roots.
6.
FLASHCARD QUESTION
Front
Solve by factoring: x² - 5x + 6 = 0.
Back
(x - 2)(x - 3) = 0; x = 2 or x = 3.
7.
FLASHCARD QUESTION
Front
What is the discriminant in a quadratic equation?
Back
The discriminant is the part of the quadratic formula under the square root: b² - 4ac. It determines the nature of the roots.
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