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Mathematics · Real Analysis

Let x ∈ ℝ be non-negative. Then x has a unique non-negative square root, denoted by √x, which satisfies which of the following identities?

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Updated: October 2026

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1x = 0
2(√x)2 = x✓
3(√x)2 = 0
4(√x)3 = x2

Correct answer

(√x)2 = x

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Let x ∈ ℝ be non-negative. Then x has a unique non-negative square root, denoted by √x, which satisfies which of the following identities?

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