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29 November, 15:22

Which of the binomials below is a factor of this trinomial 5x^2+20x+15

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Answers (2)
  1. 29 November, 15:53
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    Answer: (x+1) is what I answered on apex
  2. 29 November, 16:32
    0
    I do not see any binomials, but here is how to factor "5x^2+20x+15" so you can get the right binomials:

    5x^2 + 20x + 15

    = 5 (x^2 + 4x + 3)

    = 5 (x^2 + x + 3x + 3)

    = 5[ (x^2 + x) + (3x + 3) ]

    = 5[x (x + 1) + 3 (x + 1) ]

    = 5[ (x + 1) (3x + 3) ]

    = 5 (x + 1) (3x + 3)
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