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

Toán Lớp 9: p= (x+4/căn x +2) + (x+3 căn x/căn x)

Toán Lớp 9: p= (x+4/căn x +2) + (x+3 căn x/căn x)

Comments ( 2 )

  1. P=(x+4)/(\sqrt{x}+2)+(x+3\sqrt{x})/\sqrt{x} ĐK: x>0
    P=(\sqrt{x}(x+4)+(x+3\sqrt{x})(\sqrt{x}+2))/(\sqrt{x}(\sqrt{x}+2))
    P=(x\sqrt{x}+4\sqrt{x}+x\sqrt{x}+2x+3x+6\sqrt{x})/(\sqrt{x}(\sqrt{x}+2))
    P=(2x\sqrt{x}+10\sqrt{x}+5x)/(\sqrt{x}(\sqrt{x}+2))
    P=(\sqrt{x}(2x+5\sqrt{x}+10))/(\sqrt{x}(\sqrt{x}+2))
    P=(2x+5\sqrt{x}+10)/(\sqrt{x}+2)
    Vậy P=(2x+5\sqrt{x}+10)/(\sqrt{x}+2) với x>0
     

  2. Xin gửi cho bạn chủ tus ạ
     Cho mình xin câu trả lời hay nha 

    toan-lop-9-p-4-can-2-3-can-can

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

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