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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If x is real, then range of 3x-2 7x+5 is:

Options

  1. AR - 2 5
  2. BR - 3 7
  3. C(- , )
  4. DR - - 2 5 .

Correct answer

B. R - 3 7

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