Hệ phương trình
\left\{
xy \right.2(x^{3}+ y^{3})\div xy - 3(x^{2}+ y^{2})\div \sqrt{xy} + 5(x+y)= 8\div sqrt{xy}\
left\{ xy \right. \sqrt{5x-1} + \sqrt{2-y}= (5x+y) \div 2
Hệ phương trình
\left\{
xy \right.2(x^{3}+ y^{3})\div xy - 3(x^{2}+ y^{2})\div \sqrt{xy} + 5(x+y)= 8\div sqrt{xy}\sqrt{5x-1} + \sqrt{2-y}= (5x+y) \div 2