Question
If x = 1 + √2 and y = 1 - √2, find the value of (x2 + y2).
If x = 1 + √2 and y = 1 - √2, find the value of (x2 + y2).
Answer: Option C
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x2 + y2 = (1 + √2)2 + (1 - √2)2
= 2[(1)2 + (√2)2]
= 2 * 3
= 6.
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