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

Options

  1. A- 2
  2. B- 2
  3. C2
  4. D2

Correct answer

C. 2

Step-by-step solution

+ = 2 ...(1) Let - =P ...(2) aligned & (1)^2+(2)^2 ^2 + ^2 +2 + ^2 + ^2 - & 2 =2 ^2 + p ^2 & 2=2 ^2 + p ^2 & p ^2=2 (1- ^2 )=2 ^2 & p= 2 aligned

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