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

Toán Lớp 9: Rút gọn A= $\sqrt{12}$ + $\dfrac{4}{\sqrt{3}+\sqrt{5}}$

Toán Lớp 9: Rút gọn
A= $\sqrt{12}$ + $\dfrac{4}{\sqrt{3}+\sqrt{5}}$

Comments ( 2 )

  1. Giải đáp:
    A=2\sqrt[5] 
    Lời giải và giải thích chi tiết:
    A=\sqrt[12]+{4}/{\sqrt[3]+\sqrt[5]}
    A=\sqrt[4.3]+{4(\sqrt[3]-\sqrt[5])}/{(\sqrt[3]+\sqrt[5])(\sqrt[3]-\sqrt[5])}
    A=2\sqrt[3]+{4(\sqrt[3]-\sqrt[5])}/{3-5}
    A=2\sqrt[3]+{4(\sqrt[3]-\sqrt[5])}/{-2}
    A=2\sqrt[3]-2(\sqrt[3]-\sqrt[5])
    A=2\sqrt[3]-2\sqrt[3]+2\sqrt[5]
    A=2\sqrt[5]

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

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