Which of the following expressions is equal to -X2 -81?

Question

Which of the following expressions is equal to -X2 -81?

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Minh Khuê 5 years 2021-07-31T17:34:51+00:00 2 Answers 34 views 0

Answers ( )

  1. linhdan
    0
    2021-07-31T17:35:57+00:00
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    Answer:

    you have to add an image

    Step-by-step explanation:

    but it could be (-x+9)(x-9) if thats an option

  2. diemkieu
    0
    2021-07-31T17:36:49+00:00
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    Answer:

    x = -9

    Step-by-step explanation:

    -X2 -81=0

    x2+81=0

    x = -9

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