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simplify the following expression. \\(2x - 3)(x + 5)\\ \\?x^2 + \\quadx…

Question

simplify the following expression.

\\(2x - 3)(x + 5)\\

\\?x^2 + \quadx + \quad\\

Explanation:

Response

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"blank_filling_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Distributive Property",
"Algebraic Simplification",
"Combining Like Terms"
],
"new_concepts": [
"Multiplying Binomials"
],
"current_concepts": [
"Distributive Property",
"Algebraic Simplification",
"Combining Like Terms",
"Multiplying Binomials"
]
}
</pre_analysis>

<reasoning>

Apply the distributive property

Using the Distributive Property knowledge point
\[
(2x - 3)(x + 5) = 2x(x + 5) - 3(x + 5)
\]

Expand the terms

Using the Algebraic Simplification knowledge point
\[
2x(x + 5) - 3(x + 5) = 2x^2 + 10x - 3x - 15
\]

Combine like terms

Using the Combining Like Terms knowledge point
\[
2x^2 + (10x - 3x) - 15 = 2x^2 + 7x - 15
\]
</reasoning>

<answer>
Simplify the following expression.

\[(2x - 3)(x + 5)\]

<blank>\(2\)</blank>\(x^2 +\) <blank>\(7\)</blank>\(x +\) <blank>\(-15\)</blank>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Fill-in-the-blank",
"knowledge_point": [
"Mathematics",
"Algebra",
"Multiplying Binomials"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"blank_filling_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Distributive Property",
"Algebraic Simplification",
"Combining Like Terms"
],
"new_concepts": [
"Multiplying Binomials"
],
"current_concepts": [
"Distributive Property",
"Algebraic Simplification",
"Combining Like Terms",
"Multiplying Binomials"
]
}
</pre_analysis>

<reasoning>

Apply the distributive property

Using the Distributive Property knowledge point
\[
(2x - 3)(x + 5) = 2x(x + 5) - 3(x + 5)
\]

Expand the terms

Using the Algebraic Simplification knowledge point
\[
2x(x + 5) - 3(x + 5) = 2x^2 + 10x - 3x - 15
\]

Combine like terms

Using the Combining Like Terms knowledge point
\[
2x^2 + (10x - 3x) - 15 = 2x^2 + 7x - 15
\]
</reasoning>

<answer>
Simplify the following expression.

\[(2x - 3)(x + 5)\]

<blank>\(2\)</blank>\(x^2 +\) <blank>\(7\)</blank>\(x +\) <blank>\(-15\)</blank>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Fill-in-the-blank",
"knowledge_point": [
"Mathematics",
"Algebra",
"Multiplying Binomials"
]
}
</post_analysis>