AP EAMCET Engineering 21 Sep 2020 Shift 1 Paper

Section: Mathematics

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Question : 72 of 160

Marks: +1, -0

The locus of a point P such that PA+PB=4 where A(2,3,4),B(−2,3,4) is

y2+z2+6y+8z+25=0
y2−z2+6y+8z−25=0
y2+z2−6y−8z+25=0
y2+z2−6y−8z−25=0

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