Optellen en aftrekken (a+bi)

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Bereken

1. \((-6+5i)-(-2-3i)\)
2. \((3+i)-(-3+5i)\)
3. \((10+4i)+(-3-8i)\)
4. \((8+2i)-(7+7i)\)
5. \((-6+i)-(7+4i)\)
6. \((10-6i)-(3-2i)\)
7. \((-9+i)-(6+8i)\)
8. \((-9+i)-(-1+10i)\)
9. \((5-4i)+(-1-9i)\)
10. \((2+8i)+(-10-2i)\)
11. \((2+3i)+(-8-4i)\)
12. \((3-8i)+(10-9i)\)

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Bereken

Verbetersleutel

1. \((-6+5i)-(-2-3i)= -6+5i +2+3i =\color{red}{-6+2}\color{blue}{+5i +3i}=\color{red}{-4}\color{blue}{+8i}\)
2. \((3+i)-(-3+5i)= 3+i +3-5i =\color{red}{3+3}\color{blue}{+i -5i}=\color{red}{6}\color{blue}{-4i}\)
3. \((10+4i)+(-3-8i)= 10+4i -3-8i =\color{red}{10-3}\color{blue}{+4i -8i}=\color{red}{7}\color{blue}{-4i}\)
4. \((8+2i)-(7+7i)= 8+2i -7-7i =\color{red}{8-7}\color{blue}{+2i -7i}=\color{red}{1}\color{blue}{-5i}\)
5. \((-6+i)-(7+4i)= -6+i -7-4i =\color{red}{-6-7}\color{blue}{+i -4i}=\color{red}{-13}\color{blue}{-3i}\)
6. \((10-6i)-(3-2i)= 10-6i -3+2i =\color{red}{10-3}\color{blue}{-6i +2i}=\color{red}{7}\color{blue}{-4i}\)
7. \((-9+i)-(6+8i)= -9+i -6-8i =\color{red}{-9-6}\color{blue}{+i -8i}=\color{red}{-15}\color{blue}{-7i}\)
8. \((-9+i)-(-1+10i)= -9+i +1-10i =\color{red}{-9+1}\color{blue}{+i -10i}=\color{red}{-8}\color{blue}{-9i}\)
9. \((5-4i)+(-1-9i)= 5-4i -1-9i =\color{red}{5-1}\color{blue}{-4i -9i}=\color{red}{4}\color{blue}{-13i}\)
10. \((2+8i)+(-10-2i)= 2+8i -10-2i =\color{red}{2-10}\color{blue}{+8i -2i}=\color{red}{-8}\color{blue}{+6i}\)
11. \((2+3i)+(-8-4i)= 2+3i -8-4i =\color{red}{2-8}\color{blue}{+3i -4i}=\color{red}{-6}\color{blue}{-i}\)
12. \((3-8i)+(10-9i)= 3-8i +10-9i =\color{red}{3+10}\color{blue}{-8i -9i}=\color{red}{13}\color{blue}{-17i}\)