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lebaohoangviet
2 năm trước
đường thẳng OA là đồ thị hàm số y=f(x)=ax(a≠0) a. Tính tỉ số $\frac{y_{0}-2 }{x_{0}-4 }$ b. Giả sử $x_{0}$ = 5 tính diện tích ΔOBC
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