Solving Quadratic Equations

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Objective

I can solve quadratic equations using the quadratic formula.

Part 1 of 4

Warm-up video

Kayla Jones · 4:00

We don't generate video — this one is by Kayla Jones 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. 1

    The first step to solving a quadratic equation using the quadratic formula is to identify a, b, and c.

  2. 2

    The quadratic formula is x = -b ± √(b² - 4ac) / 2a.

  3. 3

    After plugging in a, b, and c, you must simplify and separate the equation into two to find both x-intercepts.

Part 3 of 4

Practice

11 questions

1

What is the first step in solving a quadratic equation using the quadratic formula?

2

Write the quadratic formula.

Part 4 of 4

Exit ticket

Quick comprehension check

Solve for x using the quadratic formula: x² + 4x - 5 = 0. Show all steps, including identifying a, b, and c.

Sample answer included in the free materials

Get the materials

Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

    Complete lesson plan with answer keys and alternate activities

  • Student Handout

    Printable worksheet

  • Slides

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