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1. a2=9 , b2=16

  • A. ৭
  • B. ৭
  • C. ৭
  • D. ৭

Answer: Option A

Explanation:

a² = 9

= > a = ✓9

∴ a = 3

b² = 16

= > b = ✓16

∴ b = 4

 ∴ (a + b) = (3 + 4)

                = 7 

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