{(x + y)xy = 6} \\
{(x + z)xz = 12} \\
{(z + y)zy = 30} \\
\end{array}} \right.
Bài viết đã được chỉnh sửa nội dung bởi my_ha_123: 02-11-2010 - 18:32
Bài viết đã được chỉnh sửa nội dung bởi my_ha_123: 02-11-2010 - 18:32
de the nay ha ban?$(x + y)xy = 6$
$(x + z)xz = 12 $
$(z + y)zy = 30$
It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow
dạ đúng rồi sao anh đánh đuơc hay vậy?de the nay ha ban?
It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow
[latex] cong thuc toan [/latex]
It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow
Từ hệ ta suy ra $xy(x+y)+yz(y+z)+zx(z+x)=6+12+30=48$${(x + y)xy = 6$
${(x + z)xz = 12} $
${(z + y)zy = 30} $
\end{array}} \right.
$\left\{ {\begin{array}{*{20}c} {(x + y)xy = 6} \\ {(x + z)xz = 12} \\ {(z + y)zy = 30} \\\end{array}} \right. $
0 thành viên, 1 khách, 0 thành viên ẩn danh