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Q: Multiply and simplify. (3x – 1)(2x + 5) A. 6x2 – 13x – 5 B. 6x2 – 17x – 5 C. 6x2 + 13x – 5 D. 6x2 + 17x – 5
A: (3x – 1)(2x + 5) = 6x^2 + 15x - 2x - 5 = 6x^2 + 13x - 5
Question
Updated 6/16/2014 2:10:48 PM
Edited by andrewpallarca [6/16/2014 2:10:19 PM]
Rating
3
(3x – 1)(2x + 5)

= 6x^2 + 15x - 2x - 5

= 6x^2 + 13x - 5

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Question
Updated 6/16/2014 2:11:11 PM
Multiply and simplify: (3x2 – 2x – 1)(x2 + x + 5) A. 3x4 + 2x3 + 12x2 – 11x – 5 B. 3x4 + x3 + 12x2 – 10x – 5 C. 3x4 + x3 + 12x2 – 11x – 5 D. 3x4 + x3 + 14x2 – 11x – 5
Question
Updated 7/13/2014 1:57:28 PM
(3x^2 – 2x – 1)(x^2 + x + 5)
= 3x^4 - 2x^3 + 3x^3 - x^2 - 2x^2 + 15x^2 - x - 10x - 5
= 3x^4 + x^3 + 12x^2 - 11x - 5
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