Evaluate
\frac{a^{2x+1}+2a^{2x}-a-2}{4a^{x+1}+a^{x+2}+4a^{x}-a^{2}-4a-4}
Differentiate w.r.t. x
\frac{\ln(a)\left(6a^{x+2}+6a^{3x+2}+12a^{x+1}+12a^{3x+1}+a^{x+3}+a^{3\left(x+1\right)}-2a^{2x+3}-12a^{2x+2}-24a^{2x+1}+8a^{x}+8a^{3x}-16a^{2x}\right)}{\left(4a^{x+1}+a^{x+2}+4a^{x}-a^{2}-4a-4\right)^{2}}
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