Ai giúp mik bài 2 zớii

Question

Ai giúp mik bài 2 zớii
ai-giup-mik-bai-2-zoii

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Dulcie 4 years 2020-10-14T10:42:57+00:00 2 Answers 107 views 0

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  1. Nho
    0
    2020-10-14T10:44:05+00:00
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    $Bài2:_{}$

    $a)x^2+xy-2x-2y_{}$

    $⇔(x^2+xy)-(2x+2y)_{}$

    $⇔x.(x+y)-2.(x+y)_{}$

    $⇔(x+y).(x-2)_{}$

    $b)x^2-xy+2x-2y_{}$

    $⇔(x^2-xy)+(2x-2y)_{}$

    $⇔x(x-y)+2(x-y)_{}$

    $⇔(x+2)(x-y)_{}$

    $c)5x.(y-1)-2(1-y)_{}$

    $⇔5x.(y-1)+2.(y-1)_{}$

    $⇔(5x+2)(y-1)_{}$

    $d)x.(x-2)-x+2_{}$

    $⇔x.(x-2)-(x-2)_{}$

    $⇔(x-1)(x-2)_{}$

  2. Adela
    0
    2020-10-14T10:44:33+00:00
    Reply

    mình trình bày dưới hình

     

    ai-giup-mik-bai-2-zoii

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