Mathematics Quadratic Equations Online Mcqs Test

Maan AliLast Updated: October 15, 2025

Important Math Quadratic Equations Question and Answer

Total Questions:	79
Time Allowed:	40 Minutes
Total Marks:	79
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Math Quadratic Equations Practice Test Online With Explanation

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Page 1 of 4

Math

1. If the roots of ax² + b = 0 are real and distinct then

ab < 0

a = 0

ab > 0

a > 0, b > 0

2. The quadratic equation 8 sec²θ – 6 sec θ + 1 = 0 has

Infinitely many roots

Exactly two roots

Exactly four roots

No roots

3. The roots of (x – a)(x – b) = ab x² are always

Depends upon b

Real

Depends upon a and b

Depends upon a

4. x² + 4x + 4 is

Equation

None of these

Polynomial

Identity

5. If the sum and product of the roots an equation are b/a, c²/b, then the quadratic equation is

abx² – x + ac² = 0

ab² – bx + c = 0

x² – bx + ac

abx² – b²x + ac² = 0

6. If the roots of ax² + bx + c = 0 are equal in magnitude but opposite in sign, then

None of these

a = 0

c = 0

b = 0

7. If P(x) is divided by x – r such that Q(x) is the quotient and R is the remainder, then the division algorithm is

P(x) = (x – r)Q (x) + R

Q(x) = (x – r)P (x) + R

P(x) = (x – r)R + Q(x)

Q(x) = (x – r)R + P(x)

8. If the roots of x² – 5x + a = 0 are equal, then a =

25/5

± 25/4

None of these

25/4

9. If x – 2 is a factor of ax² – 12x + 4, then

a = 1

a = –7

a = 0

a = 7

10. x³ – 3x² + 2x – 6 has a factor

x – 4

x + 2

x – 3

x + 3

11. If the roots of p² + qx + 1 = 0 are equal, then

p² - 4p = 0

q² + 4p = 0

q² - 4p = 0

p² + 4q = 0

12. Cube roots of -64 are

4, w, w²

4, 4w, 4w²

-4, w, w²

-4, -4w, -4w²

13. ax⁴ + bx³ + cx² + bx + a = 0 is called _________ equation

Quadratic

Exponential

Radical

Reciprocal

14. For a quadratic equation ax² + bx + c = 0, the sum of roots is

c/a

b/a

- b/a

15. If 9x³ - 5x² is divided by 3x + 1, then the remainder is

- 27/16

None of these

16/27

27/16

16. The roots of the quadratic equation ax2 + bx + c = 0 are real and distinct if.

b² – 4ac = 0

None of these

b² – 4ac < 0

b² – 4ac > 0

17. A polynomial having one term is called

None of these

Binomial

Trinomial

Monomial

18. If a polynomial f(x) is divided by a linear divisor ax + 1, the remainder is

f(–a)

f(–1/a)

f(1/a)

f(a)

19. If ω is the imaginary cube root of unity, then the cube rots of 125 are

-3, -3 ω, -3 ω²

5, 5 ω, 5 ω²

3,3 ω, 3 ω²

-5, -5 ω, -5 ω²

20. If ax² + bx + c = 0 is satisfied by every value of x, then

b = 0, c = 0

a = b = c = 0

b = 0

c = 0

21. If one root of the equation ax² + bx + c = 0, a ≠ 0, be reciprocal of the other, then

d = 0

a = c

b = c

b = 0

22. What is the type of equation 14(x⁴+1) – 7(x³ + x) + 8x² = 0?

Rational

Irrational

Reciprocal

None of these

23. The roots of the quadratic equation 2x² – 5x + 3 – 0 are

Real

Equal

Irrational

Imaginary

24. The first degree function are called function

None of these

Cubic

Quadratic

Linear

25. If one root of the equation x² – 3x + a = 0 is 2, then

a = 0

a = 2

a = – 2

a = – 3

Page 2 of 4

26. If 2, 3 are roots of the equation 2x³ + mx² – 3x + n 0, then the value of m and n are.

None of these

–5, 30

–5, – 30

5, 30

27. The four fourth roots of unity are

-1,1, -i, i

-4, 4, -4i, 4i

-2, -2, -2i, 2i

-3, 3, -3i, 3i

28. If x² + 6x – 27 > 0 and – x² + 3x + 4 > 0, the x lies in the interval.

[9, 3]

[3, 4]

(3, 4)

(-9, 4)

29. If a > 0, b > 0, c > 0, then the roots of the equation ax² + bx + c = 0 are

Nothing can be said

Real and positive

Non-real with negative real parts

Real and negative

30. The roots of the equation 2²x – 10.2x + 16 = 0 are

1, 3

1, 8

2, 3

2, 8

31. 3x² + 2x + 1 is a

Polynomial of degree 3

Polynomial of degree 2

Polynomial of degree n

Polynomial of degree 0

32. The condition for polynomial equation ax² + bx + c = 0 to be quadratic is

a ≠ 0, b ≠ 0

a ≠ 0

a > 0

a < 0

33. For a quadratic equation ax² + bx + c sum of the root is

None of these

b/a

-b/a

c/a

34. Only one of the root of ax² + bx + c = 0, a ≠ 0, is zero if

c = 0, b ≠ 0

b = 0, c = 0

b = 0, c ≠ 0

c = 0

35. If a polynomial f(x) is divided by a linear divisor x + a, the remainder is

-af(a)

f(-a)

f(a)

f(0)

36. 3x⁴ + √5 x² + 3x + 1 is a polynomial of degree

37. The product of the roots of equation px² – tx + n = 0 is

n/p

-t/p

t/p

None of these

38. If x³ + 3x² - 6x + 2 is divided by x + 2, then the remainder is

-9

-18

39. The quadratic equation with roots 2 - √3 and 2 + √3 is

x² - 4x + 1 = 0

x² - 6x – 6 = 0

x² - 6x + 6 = 0

x² + 4x + 1 = 0

40. The polynomial ax³ + bx² + 8 has degree

None of these

a + b

41. Which one is true?

All

w³ = 1

w = 1/w²

w² = 1/w

42. If a > 0, then function f(x) = ax² + bx + c has minimum value at

x = - b/2a

x = - a/2b

x = a/2b

None of these

43. The quadratic formula is

$Math 4.01$

44. If one root of the equation ix² – 2 (i + 1) x + (2 – i) = 0 is 2 – i, then the other root is

2 + i

2 - i

- i

45. If n is a nonnegative integer, Then a₀xⁿ + …. + a₁x +a₀ is a

Polynomial of degree 2

Polynomial of degree 3

Polynomial of degree 0

Polynomial of degree n

46. If α and β are the roots of x² – 2x + 3 = 0, then the equation with roots α + 2, β + 2 is

3x² – 2x + 1 = 0

x² – 6x + 11 = 0

x² – 6x – 11

x² – 11x + 6 = 0

47. 3 x 2 + 2x + 1 is a

Polynomial of degree 0

Polynomial of degree 2

Polynomial of degree 3

Polynomial of degree n

48. [1 + √-3/2]⁹ + [1 - √-3/2]⁹ = ?

-2

49. If for the quadratic equation ax² + bx + c = 0, the difference of the roots is the same as their product, then the ration of the roots is.

c – a/c + a

b – c/b + c

a – b/a + b

None of these

50. 7y2 + 5 √y + 3 is a polynomial over

Natural numbers

Rational number

None of these

Integers

Page 3 of 4

51. The value of p for which both the roots of the equation 4x² – 20 px + (25p² + 15p – 66) = 0 are less than 2, lies in

(-∞, -1)

(2, ∞)

(4/5, 2)

(-1, -4/5)

52. Name the type of equation √x+a + √x+b = e√ex+d

Rational

Reciprocal

None of these

Irrational

53. Quadratic equation is an equation of degree

54. Which is the root of the equation x⁴ - 9x³ + 6x² + 2 = 0?

-1

-2

55. Two square roots of the unity are

1, - ω

1, -1

t, t²

-1, ω

56. If α, β are the roots of ax² + bx + c = 0, then roots of cx² + bx + a = 0 are

- α,- β

β, 1/α

α,1/β

1/α, 1/β

57. The solution set of x² + 4x – 437 = 0 is

{23, -19}

{-23, 19}

{2, -9}

{-2, 9}

58. Which statement is true about the discriminant of the quadratic equation cx² + dx + e = 0 when c ≠ 0?

4ce

None of these

d + 4ce

d² – 4ce

59. A root of equation x⁴ - 5x² + 4 = 0 is

None of these

60. The solution of a quadratic equation x² + 5x – 6 = 0

x = 1, x = -6

x = 1

x = 6

x = -1, x = 6

61. If x³ + ax + – a²x – a³ is divided by x + a, then the remainder is

-a³

a³

2a³

62. Both the roots of the equation (x – b)(x – c) + (x – c)(x – a) + (x – a)(x – b) = 0 are always

Negative

None of these

Real

Positive

63. 1+w+w² = ?

-1

None of these

64. If S = the sum of the roots of the equation and P = product of the roots of the equation then their equation can be written as:

x² – Sx + P = 0

x² + Sx + P = 0

x² + Sx – P = 0

x² – Sx – P = 0

65. If the roots of 3x² + kx + 12 = 0 are equal, then k =

-12

±12

66. The product of the roots of the equation 9x² – 5x – 27 = 0

5/27

-1/3

-5/9

-3

67. Sum of the roots of equation ax² + bx + c = 0 is

c/a

-b/a

b/a

-c/a

68. For S = Sum of roots and P = Product of roots, the quadratic equation is

x² + Sx + P = 0

x² – Sx + P = 0

x² – Sx – P = 0

x² + Sx – P = 0

69. If α, β are non-real roots of ax² + bx + c = 0 (a, b, c ϵ Q), then

αβ = 1

α = 1

β = α

α = β

70. If x⁴ – 3x + 5 is divided by 2x – 1, then the remainder is

35/16

-9

-35/16

71. w¹⁰⁹ = ?

[-1+i√3/2]

[-1-√3/2]

72. If ω is the imaginary cube root of unity, then ω³ =

2ω

ω²

73. What should be added to 9x⁴ + 2x² + 25 to make it a perfect square?

14x²

-32x²

3x²

30x²

74. The nature of the roots of equation 9x² -5x + 3 = 0

Real & unequal

Real & equal

Irrational

Complex

75. If roots of a quadratic equation are equal then discriminant

>0 and is a perfect square

Page 4 of 4

76. If x² - 7x + a has a remainder 1 when divided by x + 1, then

a = 0

a = 7

a = 1

a = -7

77. The value of a for which the sum of the squares of the roots of the equation x² – (a – 2) x – 1 = 0 assume the least value is

78. The quadratic equation whose roots are α β is

x² + (α + β)x - αβ = 0

x² - (α + β)x + αβ = 0

x² - (α + β)x - αβ = 0

x² + (α + β)x + αβ = 0

Physics

79. The graph of the quadratic function is

Rectangle

Circle

Parabola

Triangle

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Maan AliLast Updated: October 15, 2025

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Important Math Quadratic Equations Question and Answer

Math Quadratic Equations Practice Test Online With Explanation

Math

Physics

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