Question # 1

The discriminant of x²-3x+3=0 is:

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-3

3

-2

2

Product of roots of equation 5x²+3x-9=0:

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1

If a = -2, b = -1 and c = -1, then discriminant is equal to:

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17

-17

-7

7

If b²-4ac = 0, then roots are:

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Rationaland equal

Irrationaland equal

Irrationaland unequal

Rational and unequal

Each of the complex cube root of unity is:

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The square of the other

The half of the other

The cube of the other

Equal to each other

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2

1

The Discriminant of ax²+bx+c=0 is:

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b²-4ac

b²⁺4ac

-b²⁺4ac

-b²-4ac

In equation ax²+bx+c=0, a and b are:

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Constants

Co-efficients

Variables

Factors

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One variable

Twovariable

Threevariable

Fourvariable

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1

-1

0

2

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2

1

0

If b²-4ac>0 and is a perfect square, then roots are:

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Rational and equal

Rationaland unequal

Irrationaland equal

Irrationaland unequal

if a=1, b=-3 and c= 3, then discriminant is:

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3

-2

2

-3

Sum roots of 4x²-3x+6=0:

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10th Class Mathematics Chapter 2 Theory of Quadratic Equations English Medium KPK Boards Online MCQ's MCQs With Answers

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