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1147

Q: 217 x 217 + 183 x 183 = ?

  • 1
    84521
  • 2
    87487
  • 3
    80578
  • 4
    78458
  • Show Answer
  • Workspace

Answer : 3. "80578"
Explanation :

Answer: C) 80578 Explanation: 2172+1832   = 200+172+200-172   It is in the form of a+b2+a-b2=2a2+b2   = 2(40000 + 289) = 80578.

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