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If f( )= ^2 -1 , then what is f( )+f( ) 1-f( ) f( ) equal to?

Options

  1. Af( - )
  2. Bf( + )
  3. Cf( ) f( )
  4. Df( )

Correct answer

B. f( + )

Step-by-step solution

aligned & f( )= ^2 -1 = & f( )+f( ) 1-f( ) f( ) = + 1- & = ( + )=f( + ) aligned

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