Solve: x² + 6x + 9 = 0

A x = −3 (double root)

B x = 3 (double root)

C x = −3 and x = 3

D No real solutions

✓ Correct Answer: Option A

x² + 6x + 9 = (x + 3)² = 0 → x = −3 (a repeated root).

💡 Why is A) the correct answer?

The correct answer to the question "Solve: x² + 6x + 9 = 0" is Option A: x = −3 (double root).

The other options — B) x = 3 (double root), C) x = −3 and x = 3, D) No real solutions — are incorrect for this SAT Exam Prep question. As explained above: x² + 6x + 9 = (x + 3)² = 0 → x = −3 (a repeated root).

📚 About This SAT Exam Prep Practice Question

This 2-level SAT Exam Prep question from the Math (No Calculator) topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free SAT Exam Prep practice test or use flashcards for spaced repetition review.

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Solve: x² + 6x + 9 = 0

✓ Correct Answer: Option A

📚 About This SAT Exam Prep Practice Question

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