What is the factorization of the expression below? 4x^2-81

Question

What is the factorization of the expression below? 4x^2-81

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4 hours 2021-09-14T21:25:00+00:00 2 Answers 0

Answers ( )

  1. Ava
    0
    2021-09-14T21:26:27+00:00

    Answer:

    (2x – 9)(2x + 9)

    Step-by-step explanation:

    4x² – 81

    (2x)² – 9²

    (2x – 9)(2x + 9)

  2. Ava
    0
    2021-09-14T21:26:45+00:00

    Answer:

    (2x-9) (2x+9)

    Step-by-step explanation:

    4x^2-81

    Writing this as

    (2x)^2 – 9^2

    We recognize this as the difference of squares

    a^2 – b^2 = (a-b)(a+b)

    (2x-9) (2x+9)

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