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If +2 =1 , then what is 2 - equal to?

Options

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

Correct answer

C. 2

Step-by-step solution

+2 =1 (i) 2 - = (let) (ii) Squaring and adding 1+4=1+ ^2 ^2=4 =2

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