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

Toán Lớp 8: tìm gtnn của x^2+2(x+1)^2+3(x+2)^2+4(x+3)^2

Toán Lớp 8: tìm gtnn của x^2+2(x+1)^2+3(x+2)^2+4(x+3)^2

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