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What is ( 9^ - 9^ ) equal to?

Options

  1. A- 5- 5 2
  2. B- 5- 3 2
  3. C5- 5 2
  4. D5- 5 4

Correct answer

C. 5- 5 2

Step-by-step solution

aligned & 9^ - 9^ = 2 ( 9^ - 9^ ) 2 & = 2 ( 1 2 9^ - 1 2 9^ ) & = 2 [ (45^ -9^ ) ] & = 2 36^ & = 2 [ 2 ( 5- 5 ) 4 ] & =2 5- 5 4 & = 5- 5 2 . aligned

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