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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: `{2-3x^2}/{2x-5}+{x^2+13}/{5-2x}+{23x-2}/{2x-5}`

Tháng Bảy 5, 2022 Toán học 2 Comments 0 views

Toán Lớp 8: {2-3x^2}/{2x-5}+{x^2+13}/{5-2x}+{23x-2}/{2x-5}

Comments ( 2 )

  1. tuyetnhungthu
    tuyetnhungthu
    5 Tháng Bảy, 2022 at 10:11 sáng
    Reply

    Mong cho lời giải hay nhất
    toan-lop-8-2-3-2-2-5-2-13-5-2-23-2-2-5

  2. hoaiphuong85
    hoaiphuong85
    5 Tháng Bảy, 2022 at 10:11 sáng
    Reply
    Gửi bạn:
    $(ĐKXĐ:x\dfrac{5}{2})$
    $\dfrac{2-3x^2}{2x-5}+\dfrac{x^2+13}{5-2x}+\dfrac{23x-2}{2x-5}$ 
    $=\dfrac{2-3x^2}{2x-5}+\dfrac{x^2+13}{-(2x-5)}+\dfrac{23x-2}{2x-5}$ 
    $=\dfrac{2-3x^2}{2x-5}-\dfrac{x^2+13}{2x-5}+\dfrac{23x-2}{2x-5}$ 
    $=\dfrac{2-3x^2-x^2-13+23x-2}{2x-5}$ 
    $=\dfrac{-4x^2+23x-9}{2x-5}$ 

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222-9+11+12:2*14+14 = ? ( )

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