Factor: x² − 9 A (x − 3)(x + 3) B (x − 9)(x + 1) C (x − 3)² D x(x − 9) ✓ Correct Answer: Option A x² − 9 is a difference of squares: a² − b² = (a − b)(a + b), where a = x and b = 3. Practice SAT Exam Prep Quizzes → Browse All Questions Study Flashcards