Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Substitute the varible value in square form of the expression |
Grade: 8-a Lesson: S2-L2 |
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 \$i^2 + j^2 - k^2\$ when i = 4, j = 2 and k = 1.
Step 1a
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The given expression is, \$i^2 + j^2 - k^2\$. |
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Explanation:
The given expression is, \$i^2 + j^2 - k^2\$. The expression contains variable in 'i', 'j' and 'k' and i = 4, j = 3 and k = 1 |
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Step 1b
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Substitute the values of the variables in the expression. |
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Explanation:
Substitute the values of the variables and perform operations. ⇒ \$i^2 + j^2 - k^2\$ ⇒ \$4^2 + 3^2 - 1^2\$ Perform operations according to PEMDAS rule. ⇒ \$16 + 9 - 1\$ ⇒ \$25 - 1\$ ⇒ \$24\$ |
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