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logaphuong123
2 năm trước
Cho pt bậc 2 ẩn x (m tham số ) :x^2+2(m-1)x-2m+5=0 (1) 1) giải và biện luận số nghiệm của x1 và x2 thỏa mãn 2) tìm m sao cho x1 ,x2 tm x1/x2 + x2/x1 =2
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