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Algebra 1

9.4.7 Lesson Summary

Algebra 19.4.7 Lesson Summary

9.4.7 Lesson Summary

9.4.7 • Lesson Summary

In this lesson, you learned how to:

  • Complete the square for quadratic expressions of the form ax2+bx+cax2+bx+c when aa is not 1 and explain the process.
  • Solve quadratic equations in which the squared term coefficient is not 1 by completing the square.

Here are the activities that helped you reach those goals:

  • 9.4.1: Perfect Squares with Coefficients Other than 1
    • In this activity, you found the error when completing the square when the leading coefficient is not 1.
  • 9.4.2: Rewrite Squared Expressions
    • In this activity, you determined if a quadratic expression was a perfect square. If it was not a perfect square, you made a suggestion that could make the expression a perfect square.
    • 9.4.2: Self Check
    • 9.4.2: Additional Resources
  • 9.4.3: Standard Form and Squared Factors
    • In this activity, you found the value of cc to complete the square of the quadratic then wrote the quadratic in factored form.
    • 9.4.3: Self Check
    • 9.4.3: Additional Resources
  • 9.4.4: Three Different Methods for Solving an Equation
    • In this activity, you explored three different methods for solving quadratic equations then used each method to solve an equation.
  • 9.4.5: Perfect Square and Squared Factors
    • In this activity, you completed the square then solved the quadratic equation.

After these activities, you completed the following practice:

  • 9.4.6: Practice

Checking In

On a scale of 1 to 5, how confident do you feel about the learning goals of this lesson?

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