If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Skip to main content
Subjects
  • Math by subject
    • Early math
    • Arithmetic
    • Algebra
    • Geometry
    • Trigonometry
    • Statistics & probability
    • Calculus
    • Differential equations
    • Linear algebra
    • Math for fun and glory
  • Math by grade
    • K–2nd
    • 3rd
    • 4th
    • 5th
    • 6th
    • 7th
    • 8th
  • Science & engineering
    • Physics
    • Chemistry
    • Organic chemistry
    • Biology
    • Health & medicine
    • Electrical engineering
    • Cosmology & astronomy
  • Computing
    • Computer programming
    • Computer science
    • Hour of Code
    • Computer animation
  • Arts & humanities
    • Art history
    • Grammar
    • Music
    • US history
    • World history
  • Economics & finance
    • Microeconomics
    • Macroeconomics
    • Finance & capital markets
    • Entrepreneurship
  • Test prep
    • SAT
    • MCAT
    • GMAT
    • IIT JEE
    • NCLEX-RN
    • CAHSEE
  • College Admissions
    DonateSign in / Sign up
    Search for subjects, skills, and videos
    Main content
    Quetzalcoatl HS math archive
    Quadratic odds and ends
    Solving a quadratic by factoring
    CA Algebra I: Factoring quadratics
    Algebra II: Quadratics and shifts
    Examples: Graphing and interpreting quadratics
    CA Algebra I: Completing the square
    Introduction to the quadratic equation
    Quadratic equation part 2
    Quadratic formula (proof)
    CA Algebra I: Quadratic equation
    CA Algebra I: Quadratic roots
    Next tutorial
    Algebra 1: Expressions with rational exponents and radicals
    Current time:0:00Total duration:9:14
    0 energy points
    Quetzalcoatl
    |HS math archive|
    Quadratic odds and ends

    Quadratic equation part 2

    About
    2 more examples of solving equations using the quadratic equation. Created by Sal Khan.
    ShareTweetEmail
    Quadratic odds and ends
    Solving a quadratic by factoring
    CA Algebra I: Factoring quadratics
    Algebra II: Quadratics and shifts
    Examples: Graphing and interpreting quadratics
    CA Algebra I: Completing the square
    Introduction to the quadratic equation
    Quadratic equation part 2
    Quadratic formula (proof)
    CA Algebra I: Quadratic equation
    CA Algebra I: Quadratic roots
    Next tutorial
    Algebra 1: Expressions with rational exponents and radicals
    Introduction to the quadratic equation
    Quadratic formula (proof)
    Up Next
    Quadratic formula (proof)