Why is -3 not an applicable square root of 9?
The square root of 9 is ±3. The principal square root of 9 is 3. Usually you use the things that make sense.
The Short Answer
The square root of 9 is ±3. The principal square root of 9 is 3. Usually you use the things that make sense. I don't understand your problem, but usually when solving problems like x^2 = 9 you write that |x| = 3 x = -3,3. This problem has 2 roots. Both of them satisfy the equation x^2 = 9.
Analysis
Key Concepts: Square, root, usually
This explanation focuses on square, root, usually and spans 48 words across 6 sentences. At 29% below the average General Knowledge explanation (68 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.
What This Answer Covers
The explanation opens with: “The square root of 9 is ±3.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 6 connected points.
How This Compares in General Knowledge
Ranked #308 of 500 General Knowledge questions by answer depth (top 62%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.
Frequently Asked Questions
Is there a simple explanation for why -3 not an applicable square root of 9?
The square root of 9 is ±3. The principal square root of 9 is 3. Usually you use the things that make sense. I don't understand your problem, but usually when solving problems like x^2 = 9 you write that |x| = 3 x = -3,3. This problem has 2 roots….
How detailed is this explanation compared to similar General Knowledge questions?
This is a focused answer at 48 words, ranked #308 of 500 General Knowledge questions by depth. The key concepts covered are square, root, usually.
What approach does this answer take to explain -3 not an applicable square root of 9?
The explanation uses contrasting perspectives across 48 words. It is categorized under General Knowledge and addresses the question through 1 analytical lens.