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Sample

DAV Public School, Sector 14, Faridabad
Class: X
Subject: Math
Topic: Quadratic Equations
Date: 1-15 November, 2001

Q1. The discriminant of the quadratic equation x² - 4x + a = 0 is

4 - 16a

-16 - 4a

16 - 4a

16 + 4a

Q2. The value of k , for which the quadratic equation
x² - 4x + k = 0 has real and distinct roots is

k = 4

k < 4

k > 4

k 4

Q3. The quadratic equation whose roots are and is given by

x² - x + = 0

x² + x - = 0

x² + x + = 0

x² - x - = 0

Q4. If one root of the equation is 2 + , the other has to be

Q5. If one root of ax² + bx + c = 0 is the reciprocal of the other, then

a = b

b = c

c = a

a + c = 0

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