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Maths X A,B,C (1)

Shift-II

Date of submission: 2 Jan., 2015

 

Work sheet 2- Quadratic Equation

Name: Class: Roll no.

1. The quadratic equation 2clip_image002 + clip_image004x + 1 = 0 has ________________________ roots.

2. If clip_image006 is a root of clip_image002[1] + kx – clip_image008 = 0 then k = ________________

3. The roots of 2clip_image002[2]clip_image004[1]x – clip_image010 = 0 are ___________________ and ____________________

4. Write true or false

a) Every quadratic equation has exactly one root. (True/False)

b) Every quadratic equation has at least one real root. (True/False)

c) Every quadratic equation has at most two roots. (True/False)

d) If the coefficient of clip_image002[3] and the constant term have opposite signs then it has real roots. (True/False)

5. Is 0.2 a root of clip_image002[4] – 0.4 = 0?

____________________________________________________________________________

6. Write a quadratic equation in y with constant term -4 and coefficient of clip_image002[5] as 5. _____________

7. A quadratic equation in x with equal roots is _______________________________________

8. A quadratic equation in x with no real roots is ______________________________________

9. A quadratic equation with real and distinct roots is _________________________________

The roots of 2clip_image002[6] + clip_image012 x – 2 = 0 are _____________________ and ______________________


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