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

Toán Lớp 8: Giải PT (ko dùng delta): -_- `x^2-2x+8` HêHee

Toán Lớp 8: Giải PT (ko dùng delta): -_-
x^2-2x+8
HêHee

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