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

Toán Lớp 8: Thực hiện phép tính $\frac{3x+6}{(x-9)^3}$ . $\frac{2x-13}{(x+2)^2}$

Toán Lớp 8: Thực hiện phép tính
$\frac{3x+6}{(x-9)^3}$ . $\frac{2x-13}{(x+2)^2}$

Comments ( 2 )

  1. Giải đáp:

    (3x + 6)/(x – 9)^3 . (2x – 13)/(x + 2)^2 (x \ne 9; -2)

    = [3.(x + 2)]/(x – 9)^3 . (2x – 13)/(x + 2)^2

    = [3.(x + 2).(2x – 13)]/[(x – 9)^3.(x + 2)^2]

    = [3.(2x – 13)]/[(x – 9)^3.(x + 2)]

    $#dariana$

  2. @Dream

    Giải đáp:

    {3(2x – 13)}/{(x – 9)^2 . (x + 2)^2}

    Lời giải và giải thích chi tiết:

    {3x + 6}/{(x – 9)^3} . {2x – 13}/{(x + 2)^2}

    = {3(x + 2)}/{(x – 9)^3} . {2x – 13}/{(x + 2)^2}

    = {3(x + 2)(2x – 13)}/{(x – 9)^3 . (x + 2)^2}

    = {3(2x – 13)}/{(x – 9)^2 . (x + 2)^2}

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