Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Multiplication of surds |
Grade: 9-a Lesson: S3-L5 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Simplify: |
|
2 |
Hint |
Take multiples of '\$14,28\$' |
\$ (5sqrt(7))/2 × (8sqrt(2×7))/3 × (6sqrt(4×7))/4 \$ |
3 |
Step |
Take separate surds |
\$ (5sqrt(7))/2 × (8sqrt(2)×sqrt(7))/3 × (6sqrt(4)×sqrt(7))/4 \$ |
4 |
Step |
After Multiplication |
\$ (5× 8× 6 × sqrt(7) × sqrt(2)×sqrt(7) × sqrt(4)×sqrt(7))/24 \$ |
5 |
Step |
After simplification |
\$ (5× \cancel48^2 × 7 × sqrt(2) × 2 ×sqrt(7))/\cancel24^1 \$ |
6 |
Step |
After Multiplication |
\$ 140sqrt(14) \$ |
7 |
Answer |
B |
|
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