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

Toán Lớp 9: A=(1/(√x+3)-4/(9-x))×(2√x-6)/(√x+1)

Tháng Mười Hai 28, 2022 Toán học 2 Comments 0 views

Toán Lớp 9: A=(1/(√x+3)-4/(9-x))×(2√x-6)/(√x+1)

Comments ( 2 )

  1. hauthanhyen98
    hauthanhyen98
    28 Tháng Mười Hai, 2022 at 11:06 chiều
    Reply

    toan-lop-9-a-1-3-4-9-2-6-1

  2. myngocla
    myngocla
    28 Tháng Mười Hai, 2022 at 11:06 chiều
    Reply
    $\text{A = }$$(\dfrac{1}{\sqrt{x} + 3})$ – $(\dfrac{4}{9 – x})$ . $(\dfrac{2\sqrt{x} – 6}{\sqrt{x} + 1})$$\\$$\text{A = }$$(\dfrac{1}{\sqrt{x} + 3}$ + $\dfrac{4}{(\sqrt{x} + 3)(\sqrt{x} – 3)})$ . $(\dfrac{2\sqrt{x} – 6}{\sqrt{x} + 1})$$\\$$\text{A = }$$\dfrac{\sqrt{x}-3 + 4}{(\sqrt{x} + 3)(\sqrt{x} – 3)}$ . $\dfrac{2\sqrt{x}-6}{\sqrt{x} -1}$$\\$$\text{A = }$$\dfrac{\sqrt{x}-1}{(\sqrt{x} + 3)(\sqrt{x} – 3)}$ . $\dfrac{2(\sqrt{x}- 3)}{\sqrt{x}+1}$$\\$$\text{A = }$$\dfrac{2(\sqrt{x}-1)}{(\sqrt{x} + 3)(\sqrt{x} + 1)}$
     

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

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