Question # 1

Sum of all four fourth roots of unity is:

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1

0

-1

3

How many complex cube roots of unity are there:

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2

0

1

3

The roots of the equation:

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complex

irrational

rational

none of these

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

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rational

irrational

equal

complex

In ax² + bx + c = 0, if b² - 4ac > 0 and perfect square the roots are:

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rational

irrational

equal

complex

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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c = 0

b = 0, c = 0

Sum of all three cube roots of unity is:

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1

-1

0

3

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

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none of these

Which one is exponential equation:

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ax² + bx + c = 0

ax + b = 0

2^x = 16

Equations having a common solution are called:

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linear

quadratic

homogeneous

simultenaeous

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

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7

-7

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)}

If P(x) is a polynomial of degree m and Q(x) is a polynomial of degree n, the product P(x) . Q(x) will be a polynomial of degree:

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m . n

m - n

m + n

m × n

If P(x) is a polynomial of degree m and Q(x) is a polynomial of degree n, the quotient P(x) + Q(x) will produce a polynomial of degree:

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m . n, plus a quotient

m - n, plus a remainder

m ÷ n, plus a factor

m + n, plus a remainder

Which one is radical equation:

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ax² + bx + c

ax + b = 0

2^x = 16

3^2x - 3^x - 6 = 0 is:

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reciprocal equation

exponentialequation

radicalequation

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

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

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real and equal

complex

rational

irrational

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linear equation

Quadraticequation

cubicequation

radicalequation

A numbers exceeds its square root by 6, the number is:

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6

3

9

none of these

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