QUESTION IMAGE
Question
\\3(x - 5)^2 + 2 = -16\\
<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"explain_then_answer",
"tutor"
],
"needs_drawing": false,
"concepts_used": [],
"new_concepts": [
"Solving Quadratic Equations",
"Complex Roots"
],
"current_concepts": [
"Solving Quadratic Equations",
"Complex Roots"
]
}
</pre_analysis>
<reasoning>
Isolate the squared term
We begin by subtracting \(2\) from both sides of the equation to isolate the term containing the square.
\[
3(x - 5)^2 = -16 - 2
\]
\[
3(x - 5)^2 = -18
\]
Divide by the coefficient
Next, we divide both sides of the equation by \(3\) to fully isolate the squared binomial.
\[
(x - 5)^2 = \frac{-18}{3}
\]
\[
(x - 5)^2 = -6
\]
Take the square root
To solve for \(x\), we take the square root of both sides. Since the right side is negative, this introduces the imaginary unit \(i\), where \(i = \sqrt{-1}\).
\[
x - 5 = \pm\sqrt{-6}
\]
\[
x - 5 = \pm i\sqrt{6}
\]
Solve for x
Finally, we add \(5\) to both sides of the equation to find the complex solutions for \(x\).
\[
x = 5 \pm i\sqrt{6}
\]
</reasoning>
<answer>
\(x = 5 \pm i\sqrt{6}\)
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Free Response",
"knowledge_point": [
"Mathematics",
"Algebra",
"Complex Roots"
]
}
</post_analysis>
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<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"explain_then_answer",
"tutor"
],
"needs_drawing": false,
"concepts_used": [],
"new_concepts": [
"Solving Quadratic Equations",
"Complex Roots"
],
"current_concepts": [
"Solving Quadratic Equations",
"Complex Roots"
]
}
</pre_analysis>
<reasoning>
Isolate the squared term
We begin by subtracting \(2\) from both sides of the equation to isolate the term containing the square.
\[
3(x - 5)^2 = -16 - 2
\]
\[
3(x - 5)^2 = -18
\]
Divide by the coefficient
Next, we divide both sides of the equation by \(3\) to fully isolate the squared binomial.
\[
(x - 5)^2 = \frac{-18}{3}
\]
\[
(x - 5)^2 = -6
\]
Take the square root
To solve for \(x\), we take the square root of both sides. Since the right side is negative, this introduces the imaginary unit \(i\), where \(i = \sqrt{-1}\).
\[
x - 5 = \pm\sqrt{-6}
\]
\[
x - 5 = \pm i\sqrt{6}
\]
Solve for x
Finally, we add \(5\) to both sides of the equation to find the complex solutions for \(x\).
\[
x = 5 \pm i\sqrt{6}
\]
</reasoning>
<answer>
\(x = 5 \pm i\sqrt{6}\)
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Free Response",
"knowledge_point": [
"Mathematics",
"Algebra",
"Complex Roots"
]
}
</post_analysis>