Which property of addition is shown in the number sentence(2+3)+6=2(3+6)

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pebble1499

13.02.2022

Mathematics

for the imaginary plane the y-axis is the imaginary axis, therefore, 6 + 3i and -12 - 5i, is really just (6, 3) and (-12, -5).

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
(\stackrel{x_1}{6}~,~\stackrel{y_1}{3})\qquad
(\stackrel{x_2}{-12}~,~\stackrel{y_2}{-5})
\qquad
\left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
\left( \cfrac{-12+6}{2}~~,~~\cfrac{-5+3}{2} \right)\implies \left( \cfrac{-6}{2}~~,~~\cfrac{-2}{2} \right)\implies (-3,-1)\implies \boxed{-3 - i}$

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