Radical Expressions of integers (Part 1)
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Lesson Summary:
In this lesson, we learn how to evaluate radical expressions of integers using a graphing calculator. The teacher demonstrates how to enter the expressions into the calculator and emphasizes the importance of using parentheses to avoid incorrect answers. Through examples, we see how to approximate irrational numbers and round to the desired number of decimal places. This lesson sets the foundation for more complex radical expressions in later chapters, making it essential to have a graphing calculator.
Lesson Description:
Learn how to evaluate radicals of integers using a graphing calculator.
Questions answered by this video:
- How do you evaluate radical expressions and round to three decimal places?
- What is a radical expression?
- How do you find the square root of 78 using a calculator?
- How do you find -sqrt(89) on a calculator?
- How do you find the cube root of 25 on a calculator?
- What does it mean to round to 3 decimal places?
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Staff Review
This lesson explains how to find the square and cube roots of numbers by using a graphing calculator. All of these values can be found on just a scientific calculator as well. The steps for each calculation are shown clearly in this video.
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