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Question 47Asked in CIL MT Systems, 27 Feb 2020 (8:00 AM)

If x⁴ + x²y² + y⁴ = 29 and x² − xy + y² = 5, then what is the value of 5xy?

  1. A0
  2. B2
  3. C-2
  4. D-1
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Correct answer: (B) 2

From CIL MT Systems PYQ, 27 Feb 2020 (8:00 AM)

This is question 47 of CIL MT Systems PYQ, 27 Feb 2020 (8:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.