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If 8 is one of the roots of 2x2 ax 40 = 0 where a is a constant, w
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08 Apr 2023, 10:25
08 Apr 2023, 10:25
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Question Stats:
80% (01:22) correct
20% (00:56) wrong based on 5 sessions
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If 8 is one of the roots of \(2x^2 – ax – 40 = 0\) where a is a constant, what is the other root?
– 5
-5/2
0
5/2
5
– 5
-5/2
0
5/2
5
Re: If 8 is one of the roots of 2x2 ax 40 = 0 where a is a constant, w
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08 Apr 2023, 16:13
08 Apr 2023, 16:13
1
Product of roots = c/a = -20
r1 * r2 = -20
r2 = -20/8 = -5/2
r1 * r2 = -20
r2 = -20/8 = -5/2
gmatclubot
Re: If 8 is one of the roots of 2x2 ax 40 = 0 where a is a constant, w [#permalink]
08 Apr 2023, 16:13
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