Question
`(sqrt(2) + 1/sqrt(2))^2` is equal to :
Answer: Option C
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`(sqrt(2) + 1/sqrt(2))^2` = `(sqrt(2))^2 + (1/sqrt(2))^2 + 2 xx sqrt(2) xx 1/sqrt(2)` = 2 + `1/2` + 2 = 4+ `1/2` = `4 1/2`
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