Question
If `x = 1 + sqrt(2)` and ` y = 1 - sqrt(2), ` find the value of `(x^2 + y^2)`
Answer: Option C
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Sol `x^2 + y^2 = (1 + sqrt(2))^2 + (1 - sqrt(2))^2`
= ` 2[(1)^2 + (sqrt(2))^2]`
= 2 x 3 = 6.
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