Quadratic Equations (IMO Mathematics Olympiad Class 10): Questions 42  46 of 80
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Question number: 42
» Quadratic Equations
Question
In the Maths Olympiad of 2020 at Animal Planet, two representatives from the donkey’s side, while solving a quadratic equation, committed the following mistakes:

One of them made a mistake in the constant term and got the roots as 5 and 9.

Another one committed an error in the coefficient of x and he got the roots as 12 and 4
But in the meantime, they realized that they are wrong and they managed to get it right jointly. Find the quadratic equation.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 43
» Quadratic Equations
Question
Which of the statements given below is correct. If discriminant for equation is D________
Choices
Choice (4)  Response  

a. 


b.  Not determined 

c. 


d. 


Question number: 44
» Quadratic Equations
Question
If , then is equal to ________
Choices
Choice (4)  Response  

a.  5 

b. 


c.  0 

d. 


Question number: 45
» Quadratic Equations
Question
Which of the statements given below is correct. If discriminant for equation is D________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  D is not defined 

Question number: 46
» Quadratic Equations
Question
The expression is divisible by. Then m is a divisor of ________
Choices
Choice (4)  Response  

a.  54 

b.  20 

c.  45 

d.  40 
