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Worksheet
Curated OER

Topic 6.4 - The Quadratic Formula and Discriminant

For Students 9th - 11th
In this quadratic equation activity, students find the exact value of the discriminant and describe the nature of the roots of each quadratic equation. They then solve the equation. There are 9 problems on this page to solve.
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Handout
Purple Math

Purplemath: Complex Numbers: Introduction

For Students 9th - 10th Standards
This website provides an in-depth lesson on complex numbers. You learn about simplifying, adding, and multiplying complex numbers by viewing example problems that are worked through step-by-step. Continue on to pages 2 and 3 which...
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Unit Plan
CK-12 Foundation

Ck 12: Analysis: Quadratic Formula and Complex Sums

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations when the answers are complex numbers. Students examine guided notes, review guided practice and attempt practice...