MTH220T Phoenix Week 1 The Quadratic Equation

Posta150-wordresponsetoonethe discussion prompts by Day 5 in the discussion area below:

Prompt 1

View one of the following Week 1 videos:

Patrick Just Math Tutorials: Radical Notation and Simplifying Radicals

Khan Academy: Adding and Simplifying Radicals

Khan Academy: Simplifying Cube Root Expressions

Answer the following questions:

In the process of simplifying a radical expression, a student has provided you a decimal number as an answer. Is the student’s answer correct? Why or why not? Explain your answer.

Prompt 2

View one of the following Week 1 videos:

Patrick Just Math Tutorials; Radical Notation and Simplifying Radicals

Patrick Just Math Tutorials: Radicals: Simplifying Radical Expressions Involving Variables – Ex1

Khan Academy: Simplifying Cube Root Expressions Answerthe following questions:

What is the difference between radical equations and fractional exponents? How are they alike? Provide an example in your explanation.

Prompt 3

View the following Week 1 video:

Distance Formula and Finding the Distance between Two Points – Example 1 by Patrick Just Math Tutorials

Answerthe following questions:

Is finding the distance between 2 points in the rectangular coordinate system related to the Pythagorean theorem? Why or why not? Provide an example in your answer.

Prompt 4

View the following Week 1 video:

Khan Academy: Using the Quadratic Formula: Number of Solutions

Answerthe following question:

When using the quadratic formula to solve quadratic equations, how do you know how many solutions you should have in the end? Provide an example in your explanation.

Prompt 5

View one the following Week 1 videos:

Solving an Equation Involving a Single Radical (Square Root) – Ex 1 by Patrick Just Math Tutorials

Solving an Equation Involving a Single Radical (Square Root) – Ex 2 by Patrick Just Math Tutorials

Solving an Equation Involving a Single Radical (Square Root) – Ex 3 by Patrick Just Math Tutorials

Answerthe following question:

Explain the method used to solve an equation containing radical expressions. Why is it necessary to check the solutions for such an equation? Provide an example in your explanation.

Note: All Khan Academy content is available for free at

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