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What is a simpler form of the expression? (2n 2 + 5n + 3)(4n – 5) A. 8n 3 + 10n 2 – 13n – 15 B. 8n 3 + 30n 2 – 37n – 15 C. 8n 3 – 10n 2 + 37n – 15 D. 8n 3 + 13n 2 – 10n – 15
(2n^2 + 5n + 3)(4n - 5) = 8n^3 + 10n^2 - 13n - 15
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emdjay23|Points 85377|
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Asked 3/23/2016 9:35:36 PM
Updated 3/23/2016 10:02:04 PM
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This answer has been confirmed as correct and helpful.
Edited by jeifunk [3/23/2016 10:02:03 PM], Confirmed by jeifunk [3/23/2016 10:02:04 PM]
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Updated 3/23/2016 8:23:20 PM
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solve each quadratic equation. show your work. (2x-1)(x+7)=0
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Updated 3/27/2016 9:25:36 PM
1 Answer/Comment
(2x - 1)(x + 7)=0
2x^2 - x + 14x - 7 = 0;
2x^2 + 13x - 7 = 0;
(2x - 1)(x + 7) = 0;
2x - 1 = 0, x = 1/2;
x + 7 = 0, x = -7;
The solutions are x = 1/2 or x= -7.
Added 3/27/2016 9:25:36 PM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [3/28/2016 2:57:53 AM], Rated good by Andrew.
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Updated 3/23/2016 10:10:49 PM
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