Value of p for which the points A(3,-1) B(5,p) C(7,-5) are collinear is ?
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Answer:
p२+1+2p+4
root over p२+2p+5
4root 2
4+25+p२+10p=p२+2p+5
s. O. b. s
p२+10p+29=p२+2p+5
p=-3
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