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COMEDK2017MathematicsTrigonometric Ratios & Identities

The value of ( 4 -x ) ( 4 -y )- ( 4 -x ) ( 4 -y ) is equal to

Options

  1. A(x+y)
  2. B(x-y)
  3. C(x+y)
  4. D(x-y)

Correct answer

A. (x+y)

Step-by-step solution

We have A B- A B= (A+B)= [ ( 4 -x )+ ( 4 -y ) ] where, A= 4 -x and B= 4 -y= [ 2 -(x+y) ]= (x+y)

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