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04 Jul 2006, 03:05
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What is the value of 5x^2+4x-1?
1) x(x+2)=0
2) x=0
OA will follow.
1) x(x+2)=0
2) x=0
OA will follow.
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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04 Jul 2006, 06:12
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5x^2 + 4x - 1 => 5x^2 + 5x - x - 1 => 5x(x+1) - 1(x+1)
=> (5x-1)(x+1)
1) x(x+2)=0 It gives 2 values for x (Insufficient)
2) x=0 Sufficient for solution
To me is seems B if not missing something important which unfortunately I am still doing when there is only 5 days to go for the day.
=> (5x-1)(x+1)
1) x(x+2)=0 It gives 2 values for x (Insufficient)
2) x=0 Sufficient for solution
To me is seems B if not missing something important which unfortunately I am still doing when there is only 5 days to go for the day.
04 Jul 2006, 06:16
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B.
1. gives 2 values for x, hence insuff
2. X=0, b.
1. gives 2 values for x, hence insuff
2. X=0, b.
