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ABC is a triangle such that angle C =60^ , then what is A + B ( A - B 2 ) equal to?

Options

  1. A2
  2. B2
  3. C1
  4. D1 2

Correct answer

C. 1

Step-by-step solution

aligned A + B ( A - B 2 ) & = 2 ~A + B 2 ~A - B 2 ( ~A - B 2 ) & =2 ( - C 2 ) & =2 ( 2 - C 2 )=2 C 2 & =2 30^ =2 1 2 =1 . aligned

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