Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: Factorize |
Grade: 9-a Lesson: S2-L2 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Simplify the expression |
\$ 9x^2+25y^2+4z^2+30xy-20yz-12zx \$ |
2 |
Step |
This is in the form of |
\$(a+b-c)^2 = a^2+b^2+c^2+2ab-2bc-2ca \$ |
3 |
Step |
substituting the values |
\$ (3x)^2+(5y)^2+(2z)^2+2(3x)(5y)-2(5y)(2z)-2(2z)(3x) \$ |
4 |
Formula: |
By using formula |
\$((a+b-c)^2) \$ |
5 |
Step |
after simplifying |
\$ (3x+5y-2z)^2 \$ |
6 |
Answer |
B |
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