MCQs Theory of Quadratic Equations 1

Online multiple-choice questions about the Theory of Quadratic Equations Class 10 with Answers. The Quiz contains 20 MCQs from Chapter 2 of class 10 Mathematics. Let us start with the Theory of Quadratic Equations Quiz.

Online Multiple Choice Questions from Chapter 2 of 10th class mathematics “Theory of Quadratic Equations”

1. If $b^2-4ac=0$ then roots of $ax^2+bx+c=0$ are

 
 
 
 

2. If $b^2-4ac <0$ then the roots of $ax^2+bx+c=0$ are

 
 
 
 

3. If $\alpha, \beta$ are the roots of $x^2-x-1=0$ then product of the roots $2\alpha$ and $2\beta$ is

 
 
 
 

4. If $\alpha$ and $\beta$ are the roots of $3x^2+5x-2=0$ then $\alpha + \beta$ is

 
 
 
 

5. The roots of the equation $4x^2-4x + 1 =0$ are

 
 
 
 

6. The sum of the cube roots of unity is

 
 
 
 

7. Discriminant of $x^2-3x+3=0$ is

 
 
 
 

8. $\frac{1}{\alpha} + \frac{1}{\beta}$ is equal to

 
 
 
 

9. If $b^2-4ac>0$ but not a perfect square then roots of $ax^2+bx+c=0$ are

 
 
 
 

10. The roots of the equation $4x^2-5x+2=0$ are

 
 
 
 

11. The nature of the roots of equation $ax^2+bx+c=0$ is determined by

 
 
 
 

12. Cube roots of $-1$ are

 
 
 
 

13. $\alpha^2+\beta^2$ is equal to

 
 
 
 

14. The discriminant of $ax^2+bx+c=0$ is

 
 
 
 

15. If $b^2-4ac>0$ and is a perfect square then roots of $ax^2+bx+c=0$ are

 
 
 
 

16. If $\alpha, \beta$ are the roots of $px^2+qx+r=0$ then sum of the roots $2\alpha$ and $2\beta$ is

 
 
 
 

17. The product of cube roots of unity is

 
 
 
 

18. Two square roots of unity are

 
 
 
 

19. If $\alpha$ and $\beta$ are the roots of $7x^2-x+4=0$ then $\alpha\beta$ is

 
 
 
 

20. Discriminant of $2x^2 -7x+1=0$ is

 
 
 
 

Theory of Quadratic Equations Class 10 Mathematics

Theory of Quadratic Equations 10 Class Mathematics

  • If $\alpha$ and $\beta$ are the roots of $3x^2+5x-2=0$ then $\alpha + \beta$ is
  • If $\alpha$ and $\beta$ are the roots of $7x^2-x+4=0$ then $\alpha\beta$ is
  • The roots of the equation $4x^2-5x+2=0$ are
  • Cube roots of $-1$ are
  • The sum of the cube roots of unity is
  • The product of cube roots of unity is
  • If $b^2-4ac <0$ then the roots of $ax^2+bx+c=0$ are If $b^2-4ac>0$ but not a perfect square then roots of $ax^2+bx+c=0$ are
  • $\frac{1}{\alpha} + \frac{1}{\beta}$ is equal to
  • $\alpha^2+\beta^2$ is equal to
  • Two square roots of unity are
  • The roots of the equation $4x^2-4x + 1 =0$ are
  • If $\alpha, \beta$ are the roots of $px^2+qx+r=0$ then sum of the roots $2\alpha$ and $2\beta$ is
  • If $\alpha, \beta$ are the roots of $x^2-x-1=0$ then product of the roots $2\alpha$ and $2\beta$ is
  • The nature of the roots of equation $ax^2+bx+c=0$ is determined by
  • The discriminant of $ax^2+bx+c=0$ is
  • If $b^2-4ac>0$ and is a perfect square then roots of $ax^2+bx+c=0$ are
  • If $b^2-4ac=0$ then roots of $ax^2+bx+c=0$ are
  • Discriminant of $2x^2 -7x+1=0$ is
  • Discriminant of $x^2-3x+3=0$ is

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