alleryStart learning →If x = sqrt3 + sqrt2, find x^2 + 1/x^2.
A12
B8
C14
D10
Answer & Solution
Correct answer: D. 10
1/x = sqrt3 - sqrt2, so x + 1/x = 2sqrt3 and x^2 + 1/x^2 = 12 - 2 = 10.
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