(1+3p)(1-3p) the answer is 1-9p² How do i get this though?

Question

(1+3p)(1-3p)

the answer is 1-9p²

How do i get this though?

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Nem 3 years 2021-09-05T13:30:47+00:00 1 Answers 8 views 0

Answers ( )

  1. Acacia
    0
    2021-09-05T13:32:43+00:00
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    Step-by-step explanation:

    (a - b)(a + b) = {a}^{2} - {b}^{2}

    simplify the product and you get

    {1}^{2} - (3p {}) {}^{2}

    1 times any power automatically equals 1. So that equals

    1 - (3p) {}^{2}

    =

    1 - 9p {}^{2}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )