cần gấp………………………………

Question

cần gấp………………………………
can-gap

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Helga 4 years 2020-10-14T05:00:00+00:00 1 Answers 100 views 0

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  1. Maris
    0
    2020-10-14T05:01:49+00:00
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    5) 4x(x−2)+x=2

    ⇔4x(x−2)+(x−2)=0

    ⇔(4x+1)(x−2)=0

    ⇔4x+1=0

        x−2=0

    ⇔4x=−1

        x=2

    ⇔x=−1/4

        x=2

    7)x4(x+2)=−x−2

    ⇔x4(x+2)+(x+2)=0

    ⇔(x4+1)(x+2)=0

    ⇔x4+1=0

        x+2=0

    ⇔x4=1

        x=−2

    ⇔ x=1

        x=−2

     

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