问题
填空题
若
|
答案
由
+1 x
=2,得x+y=2xy1 y
则
=2x-xy+2y 3x+5xy+3y
=2(x+y)-xy 3(x+y)+5xy
=2•2xy-xy 3•2xy+5xy
=3xy 11xy
.3 11
故答案为
.3 11
若
|
由
+1 x
=2,得x+y=2xy1 y
则
=2x-xy+2y 3x+5xy+3y
=2(x+y)-xy 3(x+y)+5xy
=2•2xy-xy 3•2xy+5xy
=3xy 11xy
.3 11
故答案为
.3 11