यदि (x+y) Δ (x-y) = xy हो, तो xΔy =?

DWQA QuestionsCategory: Questionsयदि (x+y) Δ (x-y) = xy हो, तो xΔy =?
  • 1/4 (y-x)
  • 1/4 (x2-y2)
  • 1/4 (x-y)
  • 1/4 (x+y)
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