Answer
$ \frac{13}{(5x-2)^2}$
Work Step by Step
$\frac{(4x+1)\cdot5-(5x-2)\cdot4}{(5x-2)^2}=\frac{20x+5-(20x-8)}{(5x-2)^2}=\frac{13}{(5x-2)^2}$
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