Question # 1

If the roots of x² - bx + c = 0 are two consecutive integers, then: b² - 4ac =

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0

1

-1

2

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i

Sum of all three cube roots of unity is:

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1

-1

0

3

For what value of k, the roots of the equation x² + √k x + 2 = 0 are equal:

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1

8

2

4

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quadratic equation

reciprocal equation

exponential equation

none of these

If the sum of the roots of the equation kx² - 2x + 2k = 0 is equal to their product, then the value of k is:

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1

2

3

4

No. of ways of solving a quadratic equation:

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1

3

2

4

If the Discriminant of a quadratic equation is a perfect square, then roots are:

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real and equal

complex

rational

irrational

If 4^x = 2, then x equals:

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2

1

Which one is radical equation:

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ax² + bx + c

ax + b = 0

2^x = 16

The roots of the equation 25x² - 30x + 9 = 0 are;

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rational

irrational

equal

complex

Which one is exponential equation:

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ax² + bx + c = 0

ax + b = 0

2^x = 16

If α, ß are the roots of x² + kx + 12=0 such that α-ß = 1 then K = :

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0

±5

±7

±15

Four fourth roots of 625 are:

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±5,±5i

±5,±25i

±25,±25i

none of these

For what value of k, the sum of the roots of the equation x² + kx + 4 = 0 is equal to the product of its roots:

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±1

4

±4

-4

Sum of roots of ax² + bx + c = 0 is equal to product of roots only if:

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a+c=0

b+c=0

a+b=0

a+b+c=0

The other name of quadratic equation is:

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linear equation

1st degree equation

2nd degree equation

none

If a polynomial P(x) = x2 + 4x2 - 2x + 5 is divided by x - 1, then the reminder is:

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8

-2

4

5

The roots of the equation:

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complex

irrational

rational

none of these

Equations having a common solution are called:

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linear

quadratic

homogeneous

simultenaeous

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11th Class FA Mathematics Chapter 4 Online Test MCQs With Answers

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