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AP EAMCET202021 Sep 2020Morning ShiftMathematicsTrigonometric EquationsActual

The possible value of ( ^6( )+ ^6( )-3 ^4( ) ) is

Options

  1. A2
  2. B-2
  3. C-3
  4. D3

Correct answer

B. -2

Step-by-step solution

The ( ^6 + ^6 -3 ^4 ) (= ( ^2 + ^2 ) ( ^4 + ^4 - ^2 ^2 )-3 ^4 ) ( aligned & =1 [ ( ^2 + ^2 )^2-3 ^2 ^2 ]-3 ^4 & =1-3 (1- ^2 ) ^2 -3 ^4 & =1-3+3 ^4 -3 ^4 =-2 aligned ) Hence, option (b) is correct.

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