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What is the value of x in the equation x^2 - 9 = 0?

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What is the value of x in the equation x^2 - 9 = 0? Answer: -3 or 3

x^2 = 9 => x = ±√9 = -3 or 3.

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the CTS – Candidate Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.