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887

Q:

If 0.4 m + 0.8 n = 2.2 and 0.8 m + 0.4 n = 1.4, then the value of $$ {m^2}+{n^2}$$ is equal to 

  • 1
    8.5
  • 2
    6.5
  • 3
    16
  • 4
    9
  • Show Answer
  • Workspace

Answer : 2. "6.5"

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