Quadratic Equations (IMO- Mathematics Olympiad Class 10): Questions 43 - 49 of 80

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Question number: 43

» Quadratic Equations

MCQ▾

Question

Which of the statements given below is correct. If discriminant for equation 3x210x+3=0 is D________

Choices

Choice (4) Response

a.

D=3and15

b.

Not determined

c.

D=3and13

d.

D=2and4

Question number: 44

» Quadratic Equations

MCQ▾

Question

If x1x+1+1=0 , then 4x is equal to ________

Choices

Choice (4) Response

a.

5

b.

114

c.

0

d.

41

Question number: 45

» Quadratic Equations

MCQ▾

Question

Which of the statements given below is correct. If discriminant for equation 5x24x+2=0 is D________

Choices

Choice (4) Response

a.

D<0

b.

D>0

c.

D=0

d.

D is not defined

Question number: 46

» Quadratic Equations

MCQ▾

Question

The expression 18x2+9x+m is divisible by (x+2) . Then m is a divisor of ________

Choices

Choice (4) Response

a.

54

b.

20

c.

45

d.

40

Question number: 47

» Quadratic Equations

MCQ▾

Question

The positive value of k for which the equations x2+kx+64=0 and x28x+k=0 will both have real roots, is ________

Choices

Choice (4) Response

a.

8

b.

4

c.

16

d.

12

Question number: 48

» Quadratic Equations

MCQ▾

Question

Solve the equation 12x5+52x1=2 by using quadratic formula, then x is ________

Choices

Choice (4) Response

a.

3,32

b.

6,56

c.

3,32

d.

72,53

Question number: 49

» Quadratic Equations

MCQ▾

Question

If one roots of x2+ax+50=0 is twice the other root, then the value of ‘a’ is ________

Choices

Choice (4) Response

a.

-15

b.

15

c.

20

d.

-20

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