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haisaukhongbon04
2 năm trước
Cho đường thẳng d y=ax+b xác định a b sao cho (d) cắt (d1) y=3/2x-5 tại điểm có hoành đọ bằng 4 và cắt đường thẳng (d2) y=2x-1 tại điểm có tung độ bằng 4
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