AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper

Section: Mathematics
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Question : 28 of 160
 
Marks: +1, -0
In a ΔABC , if
2r2r3
r2r1
= r3r1 , then
r1(r2+r3)
r1r2+r2r3+r3r1
=
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