(2a-b)^9*[(b-2a)^3]^3 (a-b)^2*[(b-2a)^3]^2 (-2006^2007)*(-1/2006)^2008

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(2a-b)^9*[(b-2a)^3]^3 (a-b)^2*[(b-2a)^3]^2 (-2006^2007)*(-1/2006)^2008

(2a-b)^9*[(b-2a)^3]^3 (a-b)^2*[(b-2a)^3]^2 (-2006^2007)*(-1/2006)^2008
(2a-b)^9*[(b-2a)^3]^3 (a-b)^2*[(b-2a)^3]^2 (-2006^2007)*(-1/2006)^2008

(2a-b)^9*[(b-2a)^3]^3 (a-b)^2*[(b-2a)^3]^2 (-2006^2007)*(-1/2006)^2008
(2a-b)^9*[(b-2a)^3]^3=(2a-b)^9*[-(2a-b)^9]
=(2a-b)^(9+9)
=-(2a-b)^18
(a-b)^2*[(b-a)^3]^2=(a-b)^2*[-(a-b)^3]
=-(a-b)^(2+3)
=-(a-b)^5
(-2006^2007)*(-1/2006)^2008
=-2006^2007*(1/2006^2008)
=-2006^(2007-2008)
=-1/2006