(3x+2)(2-3x)+(9x-1)(x+1)-8x giải dùm tớ vs mai tớ thi rồi

Question

(3x+2)(2-3x)+(9x-1)(x+1)-8x giải dùm tớ vs mai tớ thi rồi

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Autumn 1 năm 2021-11-26T10:56:36+00:00 2 Answers 4 views 0

Answers ( )

  1. tuyetnhung
    0
    2021-11-26T10:58:05+00:00
    Reply

    Đáp án:

    `(3x+2)(2-3x)+(9x-1)(x+1)-8x`

    `=(3x+2)(-3x+2)+9x^2+9x-x-1-8x`

    `=-9x^2+4+9x^2+8x-1-8x`

    `=3`

  3. cattien
    0
    2021-11-26T10:58:25+00:00
    Reply

    `(3x+2)(2-3x)+(9x-1)(x+1)-8x`

    `=-9x^2+4+9x^2+8x-1-8x`

    `=3`

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