Algebra-Terme-Binomische Formel

$(a + b)^{2} $
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$ (a - b)^{2}$
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$(a + b)\cdot (a - b)$
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$(ax+b)^3$
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$(ax+b)^4$
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Beispiel Nr: 23
$\begin{array}{l} (ax + b)^{2} = a^{2}x^{2} + 2\cdot a\cdot b \cdot x + b^{2} \\ (a + b)^{2} \\ \textbf{Gegeben:} \\ (1\frac{2}{13}x + 9)^{2}\\ \\ \textbf{Rechnung:} \\\text{1. Binomische Formel} \\(1\frac{2}{13}x+9)^{2}=\left(1\frac{2}{13}\right)^{2}x^{2}+2\cdot 1\frac{2}{13}\cdot 9\cdot x+9^{2} \\(1\frac{2}{13}x+9)^{2}=1,33x^2+20\frac{10}{13}x+81 \end{array}$