Factor by grouping: 3x2 + 3 + x3 + x. A. (x2 + 1)(x + 3) B. (x2 + 1)(x - 3) C. (3x2 + 1)(x + 3) D. (3x2 - 1)(x - 3)
Question
Updated 5/24/2014 2:23:45 PM
Original conversation
User: Factor by grouping: 3x2 + 3 + x3 + x. A. (x2 + 1)(x + 3) B. (x2 + 1)(x - 3) C. (3x2 + 1)(x + 3) D. (3x2 - 1)(x - 3)

Question
Updated 5/24/2014 2:23:45 PM
Rating
3
3x^2 + 3 + x^3 + x = x^3 + 3x^2 + x + 3 = (x^2 + 1)(x + 3)
Confirmed by jeifunk [5/24/2014 9:46:41 PM]

Questions asked by the same visitor
Factor: x2 + 15x + 54. A. (x + 9)(x + 6) B. (x - 9)(x - 6) C. (x + 10)(x + 5) D. (x + 8)(x + 7)
Question
Updated 7/9/2014 12:35:11 PM
x^2 + 15x + 54 = (x + 8)(x + 7)
This answer has been flagged as incorrect.
Flagged by jeifunk [7/9/2014 12:35:10 PM]
x^2 + 15x + 54 = (x + 9)(x + 6)
Factor the following trinomial completely: x3 - x2 - 12x A. x(x 2 - x - 12) B. x(x + 3)(x - 4) C. x(x - 3)(x - 4) D. x(x + 3)(x + 4)
Question
Updated 6/29/2014 4:14:57 PM
x^3 - x^2 - 12x = x(x^2 - x - 12) = x(x + 3)(x - 4)
Confirmed by yumdrea [6/29/2014 4:23:11 PM]
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