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Chapter 5: Quadratic Equations

1.If the roots of 2x² + kx + 3 = 0 are real and equal, then k =

    2x² + kx + 3 = 0 యొక్క మూలాలు వాస్తవాలు మరియు సమానాలు అయిన k విలువ =

  (1)± 6                       (2) ± 4                   

  (2)± 2                      (4) ± 5

Answer: (3)                                            

2. 8x² – 6x – 9 = 0= ______

  (1)(2x – 3) (x – 3)         (2) (2x – 3) (x +1)                      

  (3) (2x + 1) (x – 1)            (4) (2x – 3) (4x + 3)                              

    Answer:     (4)                               

4. Roots of  5x² – 8x = 4 are  

    5x² – 8x = 4   యొక్క మూలాలు

(1) 2,                           (2) 1,

(3)   2,                               (4) 2, 7

Answer:   (1)

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