∴a+b=0

C and d are reciprocal,

∴c*d= 1

The absolute value of x is the negative reciprocal of the reciprocal of 2.

∴IxI=- 1/(-2)= 1/2

∴ 1/x= 2

And y is inseparable,

∴y=0

∴ when1/x = 2,2 (a+b) 2010-2 (CD) 2009+(1/x)+y2008 = 2 * 0 2010.

=0

When1/x =-2,2 (a+b) 2010-2 (CD) 2009+(1/x)+y2008 = 2 * 0 2010-2.

=-4