Answer
$(3x+5)^{-2}$
Work Step by Step
Simplify: $\dfrac{d(-\dfrac{(3x+5)^{-1}}{3}+C)}{dx}$
Thus, we have
$\dfrac{d(-\dfrac{(3x+5)^{-1}}{3}+C)}{dx}=(3)[\dfrac{(3x+5)^{-2}}{3}]=(3x+5)^{-2}$
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