Regel

Distributiva lagen

Distributiva lagen används när man multiplicerar in ett tal eller uttryck, t.ex. 7 eller

5 x

, i en parentes. Det multipliceras då med alla termer inuti parentesen.

Om två parenteser multipliceras ihop använder man den s.k. utvidgade distributiva lagen.

@@ Rad 11: / Rad 11: @@
 \begin{tikzpicture}[font=\footnotesize]
 \draw[gray!50,rounded corners=2pt,fill=cyan!7] (-1.5,-0.45) rectangle (1.5,0.45);
-\node[scale=0.9] (eq) at (0,0) {$a(b+c) = a \g b + a \g c $};
+\node[scale=1] (eq) at (0,0) {$a(b+c) = a \g b + a \g c $};
 \draw [->] ($(eq.north west) + (0.18,-0.15)$) to [in=125, out=65,looseness=1.1] ++(0.28,0.05);
 \draw [->] ($(eq.north west) + (0.18,-0.15)$) to [in=130, out=55,looseness=1] ++(0.74,0);

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