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07 Apr 2020, 07:10
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
84% (00:46) correct
16%
(00:51)
wrong
based on 113
sessions
History
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Archit3110
Major Poster
07 Apr 2020, 08:33
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Bunuel
#1
4x=-4
x=-1
sufficient
#2
x^2+4x+4=x^2
x=-1
sufficient
IMO D
09 Apr 2020, 00:10
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ST1:4x + 4 = 0
or,4x=-4
or,x=-1 sufficient
ST2:(x + 2)^2 = x^2
or,(x + 2)^2 - x^2 =0
or,(2x+2)*2 =0
Or,x=-1 sufficient
correct answer D
or,4x=-4
or,x=-1 sufficient
ST2:(x + 2)^2 = x^2
or,(x + 2)^2 - x^2 =0
or,(2x+2)*2 =0
Or,x=-1 sufficient
correct answer D
