Mathematics · Algebra

If x = 2 + √5 and y = 2 - √5, then the value of x 2 + y 2 is:

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If x = 2 + √5 and y = 2 - √5, then the value of x 2 + y 2 is:

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If x = 2 + &radic;5 and y = 2 - &radic;5, then the value of x 2 + y 2 is:

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If x = 2 + √5 and y = 2 - √5, then the value of x 2 + y 2 is: