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947

Q:

यदि x = b+c -2a, y=c+a-2b, z=a+b-2c है, तो x2+y2-z2+2xy का मान क्या होगा ?

  • 1
    a-b+c
  • 2
    a+b-c
  • 3
    0
  • 4
    a+b+c
  • Show Answer
  • Workspace

Answer : 3. "0"

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