tìm x 3,2.x + (-1,2) . x + 2.7

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tìm x 3,2.x + (-1,2) . x + 2.7

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Natalia 1 tháng 2021-09-01T21:46:56+00:00 2 Answers 7 views 0

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    0
    2021-09-01T21:48:19+00:00

    Bạn tham khảo nha:

    3,2x + (-1,2)x +2 . 7 = 0

    ⇔x.(3,2-1,2)+14=0

    ⇔2x+14=0

    ⇔2x       =-14

    ⇔  x       =-7

    Vậy x=-7.

    0
    2021-09-01T21:48:27+00:00

    Đáp án: 3,2x + (-1,2)x +2 . 7 = 0

    <=>x . (3,2 – 1,2) + 14 = 0

    <=>2x + 14 = 0

    <=>2x = -14

    <=>x = -7

    Vậy x=-7

     

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