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Trong mặt phẳng toạ độ cho tam giác ABC có đường thẳng qua chứa cạnh AB là 2x+3y - 5 = 0
11 months ago
69
Trong mặt phẳng toạ độ cho tam giác ABC có đường thẳng qua chứa cạnh AB là 2x+3y - 5 = 0 đường thẳng qua chứa cạnh AC là x−2y+1=0 đường thăng qua chứa cạnh BC là 4x-y+11=0 . Giá trị của m sao cho điểm M(m;m+1) thuộc miền trong tam giác ABC là m ∈(a;b). Khi đó giá trị 4a +5b +11 bằng bao nhiêu?
#ToanLop10
#HinhHocKhongGianOxy
#TamGiac
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