B) (x+3)(x−3). Difference of squares: x²−9 = (x+3)(x−3).

Factor: x² − 9

A (x−3)²

B (x+3)(x−3)

C (x+9)(x−1)

D (x−9)(x+1)

✓ Correct Answer: Option B

Difference of squares: x²−9 = (x+3)(x−3).

💡 Why is B) the correct answer?

The correct answer to the question "Factor: x² − 9" is Option B: (x+3)(x−3).

The other options — A) (x−3)², C) (x+9)(x−1), D) (x−9)(x+1) — are incorrect for this PSAT Exam Prep question. As explained above: Difference of squares: x²−9 = (x+3)(x−3).

📚 About This PSAT Exam Prep Practice Question

This 2-level PSAT Exam Prep question from the Mathematics 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 PSAT Exam Prep practice test or use flashcards for spaced repetition review.

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Factor: x² − 9

✓ Correct Answer: Option B

📚 About This PSAT Exam Prep Practice Question

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