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

Toán Lớp 9: (x+y)2-(x-y)2/(y+z)2-(y-z)2=2x/y

Toán Lớp 9: (x+y)2-(x-y)2/(y+z)2-(y-z)2=2x/y

Comments ( 1 )

  1. Cho mk xin hay nhất please
    Thank you

    toan-lop-9-y-2-y-2-y-z-2-y-z-2-2-y

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