(x ^ 2 + 2x-8) / (x ^ 3 + 2x ^ 2 + x) / {(X-2) / X. (x + 4) / (x + 1) where x = 4 / 5

(x^2+2x-8)/(x^3+2x^2+x)/{(x-2)/x .(x+4)/(x+1) =(x+4)(x-2)/[x(x+1)^2]/{(x+4)(x-2)/[x(x+1)]}=1/[x(x+1)^2]/{1/[x(x+1)]}=1/[x(x+1)^2][x(x+1)]=1/(x+1)=1/(1+4/5)=5/9

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