NGUYỄN THÀNH TIÊN
TRƯƠNG THCS LÊ VĂN TÁM
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Giải thích sự tương đương:
a/ x + 3 < 7
x – 2 < 2
Bất phương trình x + 3 < 7 có tập hợp
nghiệm là { x | x < 4 }
Biểu diễn tập nghiệm của bất phương trình
x + 3 < 7 trên trục số
Bất phương trình x – 2 < 2 có tập hợp
nghiệm là { x | x < 4 }
Biểu diễn tập nghiệm của bất phương trình
x – 2 < 2 trên trục số
8
)
8
)
Vậy bất phương trình x + 3 < 7
x – 2 < 2
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