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ques 1- the quadratic eq.. x2 - 6x + a = - have 1 root in common . the other root of the 1st nd 2nd eq are in the ratio 4:3 then the common root is a 4 b 3 c 2 d 1 ques 2 - if x 2 +px+1 is a factor of the expressin ax 3 +bx + x = x then , A a 2 + c 2 = - ab B a 2 -c 2 = - ab C a 2 -c 2 = ab d N.O.T ques 3- if the eq... (m-n)x2 + (n-L)x + L -m = 0has equal roots the L , m nd n satisfy (a) 2L= m+n (b) 2m= n+L (c) m= n+L (d) L=m+n ques 4- 1/x+p + 1/x+q = 1/r if it has equal roots same in magnitude but opposite in sign then the product of the roots will be A (p 2 +q 2 )/2 b -(p 2 +q 2 )/2 c (p 2 -q 2 )/2 d -(p 2 -+q 2 )/2 ques 5- all the values of m for which both roots of the equation x 2 - 2mx + m 2 -1 = 0 are greater that -2 but less than 4, lie in the interval (a) -2 (b) m3 (c) -1 (d)1

ques 1-  the quadratic eq.. x2 - 6x + a = - have 1 root in common . the other root of the 1st nd 2nd eq are in the ratio 4:3 then the common root is


a 4


b 3


c 2


d 1


 


ques 2 - if x2+px+1 is a factor of the expressin ax3 +bx + x = x then ,


A a2 + c2= - ab


B a2-c2= - ab


C a2-c2= ab


d N.O.T


 


ques 3-  if the eq... (m-n)x2 + (n-L)x + L -m = 0has equal roots the L , m nd n satisfy


(a) 2L= m+n


(b) 2m= n+L


(c) m= n+L


(d) L=m+n


 


ques 4-  1/x+p + 1/x+q = 1/r if it has equal roots same in magnitude but opposite in sign then the product of the roots will be


A (p2+q2)/2


b -(p2+q2)/2


c (p2-q2)/2


d -(p2-+q2)/2


 


ques 5-  all the values of m for which both roots of the equation x2 - 2mx + m2 -1 = 0 are greater that -2 but less than 4, lie in the interval


(a) -2


(b) m3


(c) -1


(d)1

Grade:11

1 Answers

Vikas TU
14149 Points
11 months ago
Dear student 
Please ask single question in a thread , 
It will be easier for us to ans. 
Good Luck 
Cheers 
 

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