Education Technology

Algebra II: Completing the Square Algebraically

by Texas Instruments


  • Students will obtain the vertex form of a quadratic expression by completing the square.


  • Vertex form of a quadratic expression
  • Expression
  • Completing the square
  • Monic (polynomial with leading coefficient of 1)

About the Lesson

This lesson involves walking students through completing the square algebraically to rewrite a quadratic expression. Question 2 of the TI-Nspire document may be used to give students additional practice in completing the square of quadratic expressions. As a result, students will be able to complete the square of any given quadratic expression.