Alg2 Lesson 3.8: Solving Radical Equations

Lesson 3.8: Solving Radical

Equations

Obj: I can solve square root and cube root equations.

EQ: How do I solve radical equations?

Roles:
Facilitator
Scribe
Resourcer
Includer

Lesson Goals:
● Creative Thinking
● Talk through controversies and conflict
● Recognize and reduce ambiguity
● Encourage thinking based on formulas and prior info
● Help explain ideas to each other
● Own your ideas and work
● Record ideas in your journal
● Answer Questions on Slides
● Follow your team roles

Facilitator

• Make sure that all peers are staying on task.

• Give advice or suggestions to resolve the problem.

• Be sure everyone is able to explain.

Scribe

• Make sure peers organize their results on their own papers.

• Remind peers to use color, arrows, and other math tools to
communicate your mathematics, reasons, and connections.

• Be ready to join the teacher for a huddle.

Resourcer

• Make sure peers are getting the materials needed.

• Make sure that all materials are put away neatly.

• Make sure that peers are logged in to the needed site.

• Help troubleshoot any technology difficulties that may arise.

Includer

• Make sure that all peers are talking about their work.

• Helps keep peers’ voice volume low.

• Encourages everyone to ask questions.

• Communicates conflicts or questions to the teacher.

Poll

What's your role today?

• Scribe

• Facilitator

• Resourcer

• Includer

● Check off tasks & skills on calendar.

● Select skills to work on.

● Work on Deltamath.

Remember to work on the following too…

Part 1: Solve Cube Root

Equations

Part 2: Solve Square Root

Equations

Fill in the Blanks

Solve for x. $13=5\sqrt{x+4}−7$

Fill in the Blanks

Solve for x. $3\sqrt{\left(3x\right)^4}+3=3$

Part 3: Extraneous Solutions

Drag and Drop

𝑥 + 1 = √(2𝑥 − 5) + 5 Real: x = ​

Placeholder

Extraneous: x = ​

Placeholder

𝑥 + 1 = √(−2𝑥 + 7) − 3 Real: ​

Placeholder

Extraneous: x = ​

Placeholder

Drag these tiles and drop them in the correct blank above

7

3

–1

–9

9

1

-3

-7

Random Question of the Day Time

https://wheelofnames.com/4ke-epz We’ll spin the
wheel as a class and spend a minute or so
discussing our answers.

Poll

What do you think about Nyan Cat?

• It's chill

• Fun & Exciting

• Never heard of it

• Poptarts!!