Rút gọn biểu thức sau : a, A = | x – 2,2 | + | x – 1,8 | b, B = | – x – 1,4 | + | x – 2,6 |
Question
Rút gọn biểu thức sau :
a, A = | x - 2,2 | + | x - 1,8 |
b, B = | - x - 1,4 | + | x - 2,6 |
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