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What is the value of 65^ +2 45^ -2 40^ - 25^ ?

Options

  1. A0
  2. B1
  3. C2
  4. D4

Correct answer

C. 2

Step-by-step solution

(90-25)^ +2-2 40^ - 25^ aligned & = 25^ - 25^ -2 40^ +2 & = 25^ 25^ - 25^ 25^ -2 40^ +2 & = ^2 25^ - ^2 25^ 25^ 25^ -2 40^ +2 & = 2 (25^ ) 25^ 25^ -2 40^ +2 & = 2 50^ 2 25^ 25^ -2 40^ +2 & = 2 50^ 50^ -2 40^ +2 & =2 50^ -2 40^ +2 & =2 40^ -2 40^ +2=2 . aligned

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