10th Class Maths MCQ with Answers Chapter 2

If roots of quadratic equation are real, rational and equal, then possible value of Disc, is…………………………

40

0

36

-49

If b2 – 4ac < 0 then the roots of a ax2 + bx + c += 0 are:

rational and equal

real

imaginary

irrational and unequal

If roots of an quadratic equation are real and distinct then Disc. is……….

Positive

Imaginary

Negative

Zero

The roots of the equation: 2(a²+b²)x²+2(a+b)x+1=0 are always

Real and unequal

None of these

Imaginary

Real and equal

If ?,?are the roots of x2 + 4x -9 = 0. Then ??.

-9

4

-4

9

Cube root of -1 are:

-1, ?, -?2

-1, -?, -?2

-1, ?, ?²

-1, -?, ?²

If a ,? are roots of 3x² + 5x -2 = 0 then a +? = ________

-2/3

5/3

3/5

-5/3

If the sum of the roots of div>(a+1)x²+(2a+3)x+(3a+4)=0 is -1, then the product of the roots is:

2

1

0

3

Sum of cube roots of unity is

-1

3

1

0

If roots of a quadratic equation are real irrational and unequal then possible value of Disc. is………………………

9

5

0

-7