AP EAPCET 23-Aug-2021 Shift 1 Paper

Section: Mathematics

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Question : 51 of 160

Marks: +1, -0

The line ax+by+c=0 is normal to the circle x2+y2+2gx+2fy+d=0 if ______

ag+bf+c=0
ag+bf−c=0
ag−bf+c=0
ag−bf−c=0

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