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If 0 < x < and x+ x= 1 2 , then x is

Options

  1. A(1- 7 ) 4
  2. B(4- 7 ) 3
  3. C- (4+ 7 ) 3
  4. D(1+ 7 ) 4

Correct answer

C. - (4+ 7 ) 3

Step-by-step solution

x+ x= 1 2 1+ 2 x= 1 4 2 x=- 3 4 , so x is obtuse and 2 x 1+ ^2 x =- 3 4 3 ^2 x+8 x+3=0 x= -8 64-36 6 = -4 7 3 x < 0 x= -4- 7 3

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