The municipality of Renkum also includes the following towns, villages and townships: Doorwerth[?], Heelsum[?], Heveadorp[?], Oosterbeek[?], Wolfheze[?].
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... on x) to the expression to the left of "=", that will make it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" in this case is (b/a)x, we must have y ...