Question # 1

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quadratic equation

reciprocal equation

exponential equation

none of these

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

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rational

irrational

equal

complex

The ration of the sum and product of roots of 7x² - 12x + 18 = 0 is:

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7:12

2:3

3:2

7:18

Sum of all three cube roots of unity is:

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1

-1

0

3

If 4^x = 2, then x equals:

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2

1

If one root of 2x² + ax + 6 = 0 is 2 then the value of a is:

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7

-7

No. of ways of solving a quadratic equation:

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1

3

2

4

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4

16

8

64

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

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real and equal

complex

rational

irrational

Solution set of the simultaneous equations : x + y = 1, x - y = 1 is:

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{(0,0)}

{(1,0)}

{(0,1)}

{(1,1)}

Solution set of the equation x² - 3x + 2 = 0 is

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{-1, 2}

{1, -2}

{-1, -2}

{1, 2}

If α, ß are complex cube roots of unity, then 1 + αⁿ + ßⁿ = .......... where n is a positive integer divisible by 3:

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1

3

2

4

Which one is radical equation:

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ax² + bx + c

ax + b = 0

2^x = 16

If the sum of the roots of ax² - (a + 1) x + (2a + 1) = 0 is 2, then the product of the roots is:

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1

2

3

4

One of the roots of the equation 3x2 + 2x + k = 0 is the reciprocal of the other, then k = ...............:

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3

2

1

4

Four fourth roots of 625 are:

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±5,±5i

±5,±25i

±25,±25i

none of these

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none of these

Complex roots of real quadratic equation always occur in:

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conjugate pair

ordered pair

reciprocal pair

none of these

Which one is exponential equation:

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ax² + bx + c = 0

ax + b = 0

2^x = 16

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linear equation

Quadraticequation

cubicequation

radicalequation

The other name of quadratic equation is:

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linear equation

1st degree equation

2nd degree equation

none

Sum of all four fourth roots of unity is:

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1

0

-1

3

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