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28 January, 05:01

How do you factor 5n^2+19n+12?

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  1. 28 January, 08:30
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    (5n + 3) (n+4)

    Step-by-step explanation:

    5n^2+19n+12

    (5n + x) (n+y)

    5 * x + y = 19

    xy = 12

    choices for x and y are 1,12 12,1

    2.6 6,2

    3.4 4,3

    Guess and check

    x < 4 because we are multiplying by 5

    check 3,4

    5*3 + 4 = 19

    (5n + 3) (n+4)
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