![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
a) a,b,c,d,e > 0 thỏa mãn điều kiện a+b+c+d+e [tex]\leq 1[/tex]
Tìm MinM = [tex]\frac{(a+b+c+d)(a+b+c)(a+b)}{2018abcde}[/tex]
b) Chứng minh : k [tex]\in N[/tex] sao cho [tex]2018^{k}-1 \vdots 2019^{10}[/tex]
Tìm MinM = [tex]\frac{(a+b+c+d)(a+b+c)(a+b)}{2018abcde}[/tex]
b) Chứng minh : k [tex]\in N[/tex] sao cho [tex]2018^{k}-1 \vdots 2019^{10}[/tex]