| - 2 \frac { 1 } { x ^ { 2 } + 4 x + 5 } d x
Evaluate
\frac{2|d||x|}{|x^{2}+4x+5|}
Differentiate w.r.t. x
\frac{2|d|\left(sign(x)x^{2}+4xsign(x)-2x|x|+5sign(x)-4|x|\right)}{\left(x^{2}+4x+5\right)|x^{2}+4x+5|}
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