2(x+5)-x^2-5x=0. Bài tìm x, cần gấp ạ

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2(x+5)-x^2-5x=0. Bài tìm x, cần gấp ạ

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Khải Quang 4 years 2020-10-30T14:42:25+00:00 2 Answers 165 views 0

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  1. Nick
    0
    2020-10-30T14:44:14+00:00
    Reply

    `2(x + 5) – x^2 – 5x = 0`

    `↔ -x^2 + 2x – 5x + 10 = 0`

    `↔ -x(x – 2) – 5(x – 2) = 0`

    `↔ -(x + 5)(x – 2) = 0`

    `↔` \(\left[ \begin{array}{l}x=2\\x=-5\end{array} \right.\)

     

  2. Orla
    0
    2020-10-30T14:44:17+00:00
    Reply

    Đay nhá
    2-5-2-5-0-bai-tim-can-gap-a

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