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 4
Warm-up video
Professor Dave Explains · 6:55Vetted channel
We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
The quadratic formula is useful because you can plug in the coefficients of the expression and get the solution.
- 2
The quadratic formula is: x = (-b ± √(b² - 4ac)) / 2a].
- 3
If the discriminant (b² - 4ac) is a negative number, there are no real solutions to the quadratic.
Part 3 of 4
Practice
12 questions
What is the quadratic formula used for?
In the quadratic formula, x = (-B ± √(B² - 4AC)) / 2A, what is the discriminant and what does it indicate about the solutions of the quadratic equation?
Part 4 of 4
Exit ticket
Quick comprehension check
“Solve the following quadratic equation using the quadratic formula: x² + 5x + 6 = 0. Show each step, including identifying the values of a, b, and c.”
Sample answer included in the free materials
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Teacher Guide
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