Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Adding and subtracting polynomials |
Grade: 8-b Lesson: S1-L1 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
Simplify \$(3q^2 - 2q + 5) + (4q^2 + 3q - 1)\$. |
|
2 |
Step |
The given expressions are |
\$(3q^2 - 2q + 5) + (4q^2 + 3q - 1)\$ |
3 |
Step |
Combine like terms with \$q^2\$: |
\$3q^2 + 4q^2 = 7q^2\$ |
4 |
Step |
Combine like terms with q: |
-2q + 3q = q |
5 |
Step |
Constant terms: |
5 -1 = 4 |
6 |
Step |
Therefore, the simplified expression is: |
\$7q^2 + q + 4\$ |
7 |
Step |
So, \$7q^2 + q + 4\$ is the simplified form of \$(3q^2 - 2q + 5) + (4q^2 + 3q - 1)\$. |
|
8 |
Choice.A |
This does not match our simplified expression. The coefficients and constants are incorrect |
\$q^2 + q - 4\$ |
9 |
Choice.B |
Correct: The expression is accurately simplified |
\$7q^2 + q + 4\$ |
10 |
Choice.C |
This does not match our simplified expression. The coefficients of \$q^2\$ and q are incorrect |
\$q^2 - q + 4\$ |
11 |
Choice.D |
The term involving q in option D is −q, but our simplified expression has +q instead. Therefore, option D is wrong |
\$7q^2 - q + 4\$ |
12 |
Answer |
Option |
B |
13 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
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