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KVPY2012MathematicsTrigonometric Ratios & Identities

The value of 81^ - 63^ - 27^ + 9^ is -

Options

  1. A0
  2. B2
  3. C3
  4. D4

Correct answer

D. 4

Step-by-step solution

81^ - 63^ - 27^ + 9^ (90^ -9^ )- (90^ -27^ )- 27^ + 9^ 9^ - 27^ - 27^ + 9^ By solving we get =4

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