AP and TS EAMCET Engineering Model Paper 12

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Question : 43 of 160

Marks: +1, -0

If p(q−r)x2+q(r−p)x+r(p−q)=0 has equal roots then

2

q

=

1
p
+
1
r
1
p
−
1
r
p+r
pr

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