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1. a+b=7

  • A. 29
  • B. 29
  • C. 29
  • D. 29

Answer: Option B

Explanation:

a2 + b2 + 3ab

= a2 + b2 + 2ab + ab

= (a + b)^2 + ab

= 7^2 + 10

= 49 + 10

= 59

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