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

Toán Lớp 9: Gút rọn : a^2+8a+16 mình chỉ thử app tốt k!!!

Toán Lớp 9: Gút rọn : a^2+8a+16 mình chỉ thử app tốt k!!!

Comments ( 1 )

  1. a^2+8a+16
    =a^2+2.a.4+4^2
    =(a+4)^2
    xin ctlhn đc ko

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

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