Q1Multiple choiceExercise 4.1
1 1 9
- (A)
- (B)
- (C)
- (D)8 64 4 64 8. The quadratic equation 2x2 – 5x + 1 = 0 has (A) two distinct real roots (B) two equal real roots (C) no real roots (D) more than 2 real roots 9. Which of the following equations has two distinct real roots? (A) 2x2 – 3 2 x + =0 (B) x2 + x – 5 = 0 (C) x2 + 3x + 2 2 = 0 (D) 5x2 – 3x + 1 = 0 10. Which of the following equations has no real roots? (A) x2 – 4x + 3 2 = 0 (B) x2 + 4x – 3 2 = 0 (C) x2 – 4x – 3 2 = 0 (D) 3x2 + 4 3 x + 4 = 0 11. (x2 + 1)2 – x2 = 0 has (A) four real roots (B) two real roots (C) no real roots (D) one real root.
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(D) 8 64 4 64 8. The quadratic equation 2x2 – 5x + 1 = 0 has (A) two distinct real roots (B) two equal real roots (C) no real roots (D) more than 2 real roots 9. Which of the following equations has two distinct real roots? (A) 2x2 – 3 2 x + =0 (B) x2 + x – 5 = 0 (C) x2 + 3x + 2 2 = 0 (D) 5x2 – 3x + 1 = 0 10. Which of the following equations has no real roots? (A) x2 – 4x + 3 2 = 0 (B) x2 + 4x – 3 2 = 0 (C) x2 – 4x – 3 2 = 0 (D) 3x2 + 4 3 x + 4 = 0 11. (x2 + 1)2 – x2 = 0 has (A) four real roots (B) two real roots (C) no real roots (D) one real root.