(2x – 1)(x + 4) using foil to multiply binomials

Question

(2x – 1)(x + 4)
using foil to multiply binomials

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Camila 2 months 2021-10-05T14:34:48+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-05T14:36:17+00:00

    Answer:

    2x^2+7x-4

    Step-by-step explanation:

    Use FOIL: multiply the first terms, inside terms, outside terms and last terms.

    (2x-1)(x+4)

    F: first terms: 2x*x=2x^2

    O: outside terms: 2x*4=8x

    I: inside terms: -1*x=-x

    L: last terms: -1*4=-4

    Add everything together

    2x^2+8x-x-4

    Combine like terms

    2x^2+7x-4

    0
    2021-10-05T14:36:39+00:00

    Answer:

    2x^2 + 7x -4

    Step-by-step explanation:

    First: 2x*x = 2x^2

    Outside: 2x*4 = 8x

    Inside: -1*x = -x

    Last: -1*4 = -4

    Add all products into one line

    2x^2 + 8x -x -4

    Simplify/Combine like terms

    2x^2 + 7x -4

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45:7+7-4:2-5:5*4+35:2 =? ( )