Question

E(x)= $\frac{x}{x ^{3} + x ^{2} } : \frac{(x+2)(2x-1) -x(x+3) +1}{(2x+2)(3x-3)}$

Answer 1

[x / x² (x+1) ] · [ 2·(x +1) ·3( x -1)   /   ( 2x² +4x -x -2 -x²-3x +1) ]
 = [ x / x² ( x+1) ]·[ 2(x+1) ·3·(x -1) /  ( x-1)· (x+1)]=
 =6 /x( x+1)