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RD Chapter 8- Quadratic Equations Ex-8.3 Interview Questions Answers

Question 1 : Solve the following quadratic equations by factorization.
(x – 4) (x + 2) = 0

Answer 1 :

(x – 4) (x + 2) = 0
Either x – 4 = 0, then x = 4
or x + 2, = 0, then x = -2
Roots are x = 4, -2

Question 2 : (2x + 3) (3x – 7) = 0

Answer 2 :


Question 3 : 3x2 – 14x – 5 = 0 (C.B.S.E. 1999C)

Answer 3 :


Roots are x = 5, −13

Question 4 : 9x2 – 3x – 2 = 0

Answer 4 :


Question 5 :

Answer 5 :


Question 6 : 6x2 + 11x + 3 = 0

Answer 6 :


Question 7 : 5x2 – 3x – 2 = 0

Answer 7 :


Question 8 : 48x2 – 13x – 1 =0

Answer 8 :


Roots are x = 1/3 , −1/16

Question 9 : 3x2 = – 11x – 10

Answer 9 :


Question 10 : 25x (x + 1) = -4

Answer 10 :



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RD Chapter 8- Quadratic Equations Ex-8.3 Contributors

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