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If + = 4 and 2 =1 , then what is 2 equal to?

Options

  1. A1 3
  2. B2 3
  3. C3 4
  4. D3 5

Correct answer

C. 3 4

Step-by-step solution

aligned & 2 =1 2 = 1 2 & + = 4 ( + )= 4 aligned + 1- =1 + =1- aligned & 1 2 + =1- 1 2 & 1+2 =2- & = 1 3 aligned Now, 2 = 2 1- ^2 = 2 1 3 1- 1 9 = 2 3 9 8 = 3 4

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