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Algebra 1

9.5.6 Lesson Summary

Algebra 19.5.6 Lesson Summary

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In this lesson, you learned how to:

  • Use the radical and "plus-minus" symbols to represent solutions to quadratic equations.
  • Explain why the plus-minus symbol is used when solving quadratic equations by finding square roots.

Here are the activities that helped you reach those goals:

  • 9.5.1: Roots of Squares
    • In this activity, you found the area and side lengths of squares to explore square roots.
  • 9.5.2: Solutions Written as Square Roots
    • In this activity, you solved quadratic equations that had radicals left in the solutions.
    • 9.5.2: Self Check
    • 9.5.2: Additional Resources
  • 9.5.3: Finding Irrational Solutions by Completing the Square
    • In this activity, you solved quadratic equations by completing the square. You graphed the equations to find the approximate solutions using a graphing calculator.
    • 9.5.3: Self Check
    • 9.5.3: Additional Resources
  • 9.5.4: Finding Exact Solutions
    • In this activity, you solved quadratic equations and used a calculator to approximate the actual solution(s).

After these activities, you completed the following practice:

  • 9.5.5: 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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