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phamsau0785tvb
2 năm trước
I/ Phương trình dạng ax + b =0 Bài 1: Hãy chứng tỏ a) x = 3/2 là nghiệm của pt: 5x - 2 = 3x + 1 b) x = 2 và x = 3 là nghiệm của pt: x2 – 3x + 7 = 1 + 2x
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