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Mathematics for IGCSE & O level - Surds (Section 1 - No. 29)

Which expression is equivalent to (√2+√3)^2?
5 + 2√6
1
5
5 - 2√6

解释

(√2 + √3)^2 = 2 + 2√6 + 3 = 5 + 2√6

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