Solving Quadratic Equations
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Objective
I can solve quadratic equations using factoring, completing the square, and the quadratic formula.
Part 1 of 3
Key concepts
3 concepts
- 1
Three common methods for solving quadratic equations are factoring, completing the square, and using the quadratic formula.
- 2
Factoring involves rewriting a quadratic expression as a product of two linear expressions, and setting each factor equal to zero to find the solutions.
- 3
The quadratic formula, x = (-b ± √(b² - 4ac)) / 2a, can be used to solve any quadratic equation, and the discriminant, b² - 4ac, indicates the nature of the roots.
Part 2 of 3
Practice
10 questions
What are the three methods described for solving quadratic equations?
Solve the following quadratic equation by factoring: x² - x - 6 = 0
Part 3 of 3
Exit ticket
Quick comprehension check
“Solve the quadratic equation x² - 4x + 4 = 0 using factoring, completing the square, and the quadratic formula. Show your work for each method.”
Sample answer included in the free materials
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Student Handout
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