Write each expression as a simplified fraction.
a. (a-2)/4a²+16a+16 / ( a/2a-4 - (a²+4)/2a²-8 - 2/a²+2a )
a. (a-2)/4a²+16a+16 / ( a/2a-4 - (a²+4)/2a²-8 - 2/a²+2a )