SSC CPO 12 Dec 2019 Shift 1 Paper

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Question : 106 of 200

Marks: +1, -0

If x⁴ + x²y² + y⁴ = 21/256 and x² + xy + y² = 3/16, then 2(x² + y²) = ?

4
5/8
3/4
5/16

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