Simplify (x² − 9)/(x − 3) for x ≠ 3.
Answer and explanation
Correct answer: C. x + 3
- Step 1: Factor the numerator as a difference of squares: (x − 3)(x + 3). Step 2. Cancel x − 3 from top and bottom. Answer: x + 3. Why not the others: Dividing term by term is not allowed for a sum or difference.
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