Which of the binomials below is a factor of this trinomial? 5x2 + 20x + 15

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23-02-2018
Mathematics

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Which of the binomials below is a factor of this trinomial? 5x2 + 20x + 15

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zrh2sfo zrh2sfo · Answer 1 · 2018-02-23T19:51:33+01:00

zrh2sfo zrh2sfo

23-02-2018

Factor the following:
5 x^2 + 20 x + 15

Factor 5 out of 5 x^2 + 20 x + 15:
5 (x^2 + 4 x + 3)

The factors of 3 that sum to 4 are 3 and 1. So, x^2 + 4 x + 3 = (x + 3) (x + 1):

Answer: 5 (x + 3) (x + 1)

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sarshaly sarshaly · Answer 2 · 2018-11-02T22:38:58+01:00

sarshaly sarshaly

02-11-2018

factor X + 1 is the answer

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