phân tivhs đã thức thành nhân tử 9(x-2)^2-(y+3)^2

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phân tivhs đã thức thành nhân tử
9(x-2)^2-(y+3)^2

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Kiệt Gia 4 years 2020-10-30T01:45:32+00:00 2 Answers 78 views 0

Answers ( )

  1. Nho
    0
    2020-10-30T01:46:34+00:00
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    Đáp án:

    $9(x – 2)² – (y + 3)² $

    $= [3(x – 2)]² – (y + 3)² $

    $= (3x – 6)² – (y + 3)² $

    $= (3x – 6 – y – 3)(3x – 6 + y + 3) $

    $= (3x – y – 9)(3x + y – 3) $

     

  2. Sapo1
    0
    2020-10-30T01:47:07+00:00
    Reply

    `9(x-2)^2-(y+3)^2`

    `=[3(x – 2)]² – (y + 3)²`

    `= (3x – 6 – y – 3)(3x – 6 + y + 3)`

    `= (3x – y – 9)(3x + y – 3)`

    Học tốt !

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