Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Multiplying Radicals |
Grade: 8-b Lesson: S1-L7 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
Simplify the following expression: \$(\sqrt8 \times \sqrt2) \times (3\sqrt5 \times \sqrt10)\$. |
|
2 |
Step |
To simplify the expression: |
\$(\sqrt8 \times \sqrt2) \times (3\sqrt5 \times \sqrt10)\$ |
3 |
Step |
Simplify inside the parentheses: |
\$\sqrt(8) \times \sqrt(2) = \sqrt(8 \times 2) = \sqrt(16) = 4\$ |
4 |
Step |
Simplify the second part inside the parentheses: |
\$3\sqrt(5) \times \sqrt(10) = 3 \times \sqrt(5 \times 10) = 3 \times \sqrt(50)\$ \$3 \times \sqrt(25 \times 2) = 3 \times 5\sqrt(2) = 15\sqrt(2)\$ |
5 |
Step |
Combine the results: |
\$4 \times15\sqrt(2)\$ |
6 |
Step |
Multiply the constants: |
\$4 \times 15 = 60\$ |
7 |
Step |
Therefore, the simplified expression is \$60\sqrt(2)\$. |
|
8 |
Choice.A |
This option matches our simplified expression \$60\sqrt(2)\$ |
\$60\sqrt(2)\$ |
9 |
Choice.B |
This option is incorrect, as it suggests a different coefficient (50 instead of 60) |
\$50\sqrt(2)\$ |
10 |
Choice.C |
This option is not correct, as it involves \$\sqrt(3)\$ instead of \$\sqrt(2)\$ |
\$-50\sqrt(3)\$ |
11 |
Choice.D |
This option is not correct, as it does not match our simplified expression \$60\sqrt(2)\$ |
\$3\sqrt(10)\$ |
12 |
Answer |
Option |
A |
13 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
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