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NCERT Solutions for Class 11 Mathematics Chapter 5 Complex Numbers And Quadratic Equations
  • NCERT Solution For Class 11 Mathematics

    Complex Numbers And Quadratic Equations Here is the CBSE Mathematics Chapter 5 for Class 11 students. Summary and detailed explanation of the lesson, including the definitions of difficult words. All of the exercises and questions and answers from the lesson's back end have been completed. NCERT Solutions for Class 11 Mathematics Complex Numbers And Quadratic Equations Chapter 5 NCERT Solutions for Class 11 Mathematics Complex Numbers And Quadratic Equations Chapter 5 The following is a summary in Hindi and English for the academic year 2024-25. You can save these solutions to your computer or use the Class 11 Mathematics.

    Question 1
    CBSEENMA11015553

    If the roots of the equation bx2+ cx + a = 0 be imaginary, then for all real values of x, the expression 3b2x2 + 6bcx + 2c2 is

    • greater than 4ab

    • less than 4ab

    • greater than -4ab

    • less than 4ab

    Solution

    C.

    greater than -4ab

    As, bx2 + cx + a = 0 has imaginary roots
    So, c2< 4ab
    Now, 3b2x2 + 6bcx + 2c2
    = 3(bx + c)2– c2≥ – c2≥ – 4ab