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In chuoi theo cac tu, moi tu mot dong

lich can chi

In chu so phan tram, chuc, don vi

giai thua

hoan vi

nhap xuat chuoi~

Giai phuong trinh bac nhat AX + B = 0

Max min

In bang cuu chuong

Giai phuong trinh bac hai AXư + BX + C