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

Toán Lớp 9: x√x +√x-x -1 Giải giúp em với ạ

Toán Lớp 9: x√x +√x-x -1
Giải giúp em với ạ

Comments ( 2 )

  1. ~rai~
    \(x\sqrt{x}+\sqrt{x}-x-1\quad (x\ge 0)\\=(x\sqrt{x}+\sqrt{x})-(x+1)\\=\sqrt{x}(x+1)-(x+1)\\=(x+1)(\sqrt{x}-1).\)

  2. x\sqrt{x}+\sqrt{x}-x-1
    =(x\sqrt{x}+\sqrt{x})-(x+1)
    =sqrt{x}(x+1)-(x+1)
    =(x+1)(\sqrt{x}-1).

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

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