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

Identify the values of a, b, and c.

Write the quadratic formula.

x = (-b ± √(b² - 4ac)) / 2a

To ensure the negative sign is also squared, yielding a positive result.

Name: Solving Quadratic Equations
Author: Insta~Lesson

9th Grade · Math · 45 min

I can solve quadratic equations using the quadratic formula.

1
The first step to solving a quadratic equation using the quadratic formula is to identify a, b, and c.
2
The quadratic formula is x = -b ± √(b² - 4ac) / 2a.
3
After plugging in a, b, and c, you must simplify and separate the equation into two to find both x-intercepts.

We would love to help you present Insta~Lesson to your colleagues and administrators. Here are a few resources you can use:

A simple one-pager you can use to share Insta~Lesson.

Learn how Insta~Lesson makes life easier for teachers. This is a great resource to share at a staff meeting or PD!

Learn more about Insta~Lesson's dedicated supports for partner schools.