meeeeeeeeeeeeeeeeeeeeeeeeeee

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meeeeeeeeeeeeeeeeeeeeeeeeeee
meeeeeeeeeeeeeeeeeeeeeeeeeee

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Hưng Khoa 5 years 2021-05-17T15:17:53+00:00 2 Answers 25 views 0

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  1. thienhuong
    0
    2021-05-17T15:19:08+00:00
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    .

    meeeeeeeeeeeeeeeeeeeeeeeeeee

  2. ngochoa
    0
    2021-05-17T15:19:20+00:00
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    Đáp án : 

    a, x^2 + 7x +6 

     = x^6 + x + 6x+6

     = ( x+1 )(x+6)

    b, x^4 + 2008x^2 + 2007x + 2008 

     = x^4 + 2008x^2 + ( 2008 -1 )x +2008

     = x^4 + 2008x^2 + 2008x – x + 2008 

     = ( x^4 – x ) + 2008 ( x^2 + x + 1 )

     = x(x^3 – 1 ) + 2008 ( x^2 +x +1 )

     = x(x-1)(x^2 +x+1) +2008 (x^2 +x +1 )

     = ( x^2 +x+1 ) (x^2 – x +2008 )

     

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