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

Toán Lớp 9: √x / √x-1 + 3 / √x+1 + 4-6 √x / x-1 bài rút gọn biểu thức nha mọi ng

Toán Lớp 9: √x / √x-1 + 3 / √x+1 + 4-6 √x / x-1
bài rút gọn biểu thức nha mọi ng

Comments ( 1 )

  1. $\dfrac{\sqrt[]{x}}{\sqrt[]{x}-1}+$ $\dfrac{3}{\sqrt[]{x}+1}+$ $\dfrac{4-6\sqrt[]{x}}{x-1}$
    $=\dfrac{x+\sqrt[]{x}+3\sqrt[]{x}-3+4-6\sqrt[]{x}}{x-1}$
    $=\dfrac{x-2\sqrt[]{x}+1}{(\sqrt[]{x}+1)(\sqrt[]{x}-1)}$
    $=\dfrac{(\sqrt[]{x}-1)^2}{(\sqrt[]{x}-1)(\sqrt[]{x}+1)}$
    $=\dfrac{\sqrt[]{x}-1}{\sqrt[]{x}+1}$
    Chúc bạn học tốt !!!!!

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