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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
If t = 5k, what is t^2 2t in terms of k?
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24 Jan 2023, 01:27
24 Jan 2023, 01:27
Expert Reply
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Question Stats:
100% (00:27) correct
0% (00:00) wrong based on 5 sessions
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If \(t = –5k\), what is \(t^2 – 2t\) in terms of k ?
(A) \(25k^2 + 10k\)
(B) \(25k^2 – 10k\)
(C) \(5k^2 + 10k\)
(D) \(–5k^2 + 10k\)
(E) \(–5k^2 – 10k\)
(A) \(25k^2 + 10k\)
(B) \(25k^2 – 10k\)
(C) \(5k^2 + 10k\)
(D) \(–5k^2 + 10k\)
(E) \(–5k^2 – 10k\)
Re: If t = 5k, what is t^2 2t in terms of k?
[#permalink]
25 Jan 2023, 09:56
25 Jan 2023, 09:56
Expert Reply
Take: \(t^2 – 2t\)
Replace \(t\) with \(–5k\) to get: \((–5k)^2 – 2(–5k)\)
Simplify to get: \(25k^2 + 10k\)
Answer: A
Replace \(t\) with \(–5k\) to get: \((–5k)^2 – 2(–5k)\)
Simplify to get: \(25k^2 + 10k\)
Answer: A
gmatclubot
Re: If t = 5k, what is t^2 2t in terms of k? [#permalink]
25 Jan 2023, 09:56
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