Find all solutions to
\[x^2 + 4x + 4x \sqrt{x + 3} = 13.\]Enter all the solutions, separated by commas.
Question:
Find all solutions to
\[x^2 + 4x + 4x \sqrt{x + 3} = 13.\]Enter all the solutions, separated by commas.
Answer:
Let's think step by step.

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Find all solutions to
\[x^2 + 4x + 4x \sqrt{x + 3} = 13.\]Enter all the solutions, separated by commas.
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