For all nonzero values of \(w\), which of the following expressions is equivalent to \(\dfrac{4}{w} + \dfrac{2}{w^2}\) ?

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$$ \frac{4}{w}+\frac{2}{w^2} $$ $$ =\frac{4w}{w^2} + \frac{2}{w^2} $$ $$ = \boxed{\frac{4w+2}{w^2}} $$