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mythanhdp1
2 năm trước
giải giúp e bài 10 với ạ cho phương trình $x^{2}$-2(m+1)x +2m-15=0. gọi các nghiệm của phương trình là x1,x2 a) tìm m sao cho x1+5x2=4 b) tìm số nguyên m sao cho F = $\frac{1}{x1}$ + $\frac{1}{x2}$ cũng là số nguyên
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