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What is 1+ ^2 1+ ^2 - ( 1- 1- )^2 equal to?

Options

  1. A0
  2. B1
  3. C2
  4. D2

Correct answer

A. 0

Step-by-step solution

1+ ^2 1+ ^2 - ( 1- 1- )^2 aligned & = 1+ ^2 ^2 +1 ^2 - ( 1- -1 )^2 & = ^2 -(- )^2=0 . aligned

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