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Gokul .s asks : For what value of 'k' the equation 4 x 2 -2(k+1)x+(k+1)=0 has real and equal roots? please explain briefly 
Category : CBSE |  On : 2012-02-13 07:13:33
 
Rohan says :
28/03/2012 03:30:51
for equal roots, put b2-4ac=0.....k= -1 (or) 3...............:):):):):):):)
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Anahita asks : the number of quadratic equation which do not change after squaring the roots is..... 
Category : CBSE |  On : 2011-03-02 01:40:52
 
31/03/2012 04:50:44
0
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Abhijit dubey asks : If a, b are the roots of x2 + x + 1 = 0 and c, d are the roots of x2 + 3x + 1 = 0, then what is the value of (a – c)(b + d)(a + d)(b – c)?  
Tag : roots
Category : Quantitative Ability |  On : 2010-10-07 12:53:08
 
Anuja sood says :
07/10/2010 08:15:46
On solving the complete equation in the end we get: (d2+c2)-(a2+b2) ={(d+c)2-2cd}-{(a+b)2-2ab} =(9-2)-(-1-2) =10
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Kartikeya negi asks : find the roots of the quadratic equation, sum of whose roots is 9 and constant term is 18. a) 6 and 3 b)2 and 7 c) 4 and 5 d) can't be determined. ans is d) but goin thrgh options it is a) ??? 
Category : Quantitative Ability |  On : 2010-07-16 09:58:02
 
Ranbir says :
16/07/2010 11:06:28
6 and 3
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Shreya singal asks : If are the roots of the equation 2x3 - 3x2 + 6x + 1 = , then is equal to :  
Category : Mathematics |  On : 2010-05-30 10:24:08
 
Geet says :
15/06/2010 09:29:24
-1/6
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