### Day 65 - Unit 5 Test - 04.21.15

• Summative Exam 2 on Friday!

Questions

Bell Ringer
• N/A

Review
• Square Roots and Rational Exponents
• Simplifying Radical Expressions (video) (example video)
• How can radicals be simplified?
• Explain why the sum of two square roots is not equal to the square root of their sum.
• Convert expressions to simplest radical form.
• Activity
• Extra Practice
• How can radical equations be solved?
• Solve radical equations ensuring to test for extraneous solutions.
• Explain each step taken in solving radical equations.
• Activity
• Extra Practice
• Pythagorean Theorem/Distance Formula
• How can the distance between two points be determined given their position?
• Determine the distance between two points given their coordinates.
• Determine a coordinate based on the known distance and a known coordinate.
• Activity
• Extra Practice
• Pythagorean Theorem Problem Set
• How can nth root radicals be simplified?
• How can nth root radicals be solved?
• nth Root Radicals Problem Set

Lesson
• Unit 5 Test

Exit Ticket
• Posted on the board at the end of the block!

Lesson Objective(s)
• Unit 5 Test
Skills
1. Explain why the sum of two square roots is not equal to the square root of their sum.
2. Convert expressions to simplest radical form.
4. Solve radical equations ensuring to test for extraneous solutions.
5. Explain each step taken in solving radical equations.
6. Determine the distance between two points given their coordinates.
7. Determine a coordinate based on the known distance and a known coordinate.

#### In-Class Help Requests

Standard(s)
• CC.9-12.A.REI.2 Understand solving equations as a process of reasoning and explain the reasoning. Solve simple rational and radical equations in one variable, and give examples showing how extraneous solutions may arise.
• CC.9-12.N.RN.1 Extend the properties of exponents to rational exponents. Explain how the definition of the meaning of rational exponents follows from extending the properties of integer exponents to those values, allowing for a notation for radicals in terms of rational exponents. For example, we define 5^(1/3) to be the cube root of 5 because we want [5^(1/3)]^3 = 5^[(1/3) x 3] to hold, so [5^(1/3)]^3 must equal 5.
• CC.9-12.N.RN.2 Extend the properties of exponents to rational exponents. Rewrite expressions involving radicals and rational exponents using the properties of exponents.
• CC.8.G.8 Understand and apply the Pythagorean Theorem. Apply the Pythagorean Theorem to find the distance between two points in a coordinate system.

Mathematical Practice(s)
• #1 - Make sense of problems and persevere in solving them
• #2 - Reason abstractly and quantitatively
• #7 - Look for and make use of structure