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388

Q:

If a + b + c = 6, a3 + b3+c3-3abc=342, then what is the value of ab + bc + ca?

  • 1
    5
  • 2
    8
  • 3
    -7
  • 4
    -5
  • Show Answer
  • Workspace

Answer : 3. "-7 "

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