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If every pair from among the equations `x^2+px+qr=0,x^2+qx+rp=0` and `x^2+rx+pq=0` has a common root, then the sum of the three common roots is

A

2(p+q+r)

B

p+q+r

C

`-(p+q+r)`

D

pqr

Text Solution

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The correct Answer is:
B
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