Wenn 7(x+y+z) = 150, dann berechnen Sie den Wert S = (x+y+z)².
\(7(x+y+z) = 150\\ x+y+z=\frac{150}{7}\\ S=(x+y+z)^2=(\frac{150}{7})^2=\color{blue}459,184\)
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