Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Determine the value of algebraic expression |
Grade: 7-a Lesson: S2-L7 |
Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
1. Determine the value of expression \$9n + 9sqrt(n^2)\$ when n = 10.
Step 1a
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Given expression. |
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Explanation:
Given expression \$9n + 9sqrt(n^2)\$ is an algebraic expression in variable n and value of n = 10. |
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Step 1b
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Substitute the value of variable |
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Explanation: Substitute the value of variable n = 10 in the expression. \$9n + 9sqrt(n^2)\$ \$=> 9(10) + 9sqrt(10^2)\$ |
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Step 1c
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Perform the opreartions among the terms to determine the value of expression. |
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Explanation:
Perform operations among the terms \$=> 90 + 9sqrt(100)\$ \$=> 90 + 9(10) \$ \$=> 90 + 90 \$ \$=> 180 \$ |
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