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Complete the Square (Solve Quadratic)


Videos and lessons to help High School students learn to choose and produce an equivalent form of an expression to reveal and explain properties of the quantity represented by the expression.

A. Factor a quadratic expression to reveal the zeros of the function it defines.

B. Complete the square in a quadratic expression to reveal the maximum or minimum value of the function it defines.

Suggested Learning Targets

  • Write quadratics expressions in equivalent forms by completing the square.

Common Core: HSA-SSE.B.3b

Related Topics:
Common Core (Algebra)

Common Core for Mathematics

Completing the Square - Solving Quadratic Equations
x2 - 6x + 8
Completing the Square Example 2 Solve Quadratic Equations
2x2 - 6x + 3 = 0

Solving Quadratic Equations by Completing the Square.
Completing the square.

Completing the Square to Solve Quadratic Equations.
Completing the Square to Solve Quadratic Equations.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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