Optellen en aftrekken (a+bi)

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Bereken

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

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Bereken

Verbetersleutel

1. \((-2+2i)+(7+5i)= -2+2i +7+5i =\color{red}{-2+7}\color{blue}{+2i +5i}=\color{red}{5}\color{blue}{+7i}\)
2. \((-8-3i)+(2+7i)= -8-3i +2+7i =\color{red}{-8+2}\color{blue}{-3i +7i}=\color{red}{-6}\color{blue}{+4i}\)
3. \((-9-6i)+(-8-10i)= -9-6i -8-10i =\color{red}{-9-8}\color{blue}{-6i -10i}=\color{red}{-17}\color{blue}{-16i}\)
4. \((7-8i)+(3-4i)= 7-8i +3-4i =\color{red}{7+3}\color{blue}{-8i -4i}=\color{red}{10}\color{blue}{-12i}\)
5. \((-7+i)-(6-8i)= -7+i -6+8i =\color{red}{-7-6}\color{blue}{+i +8i}=\color{red}{-13}\color{blue}{+9i}\)
6. \((-1+i)+(6+5i)= -1+i +6+5i =\color{red}{-1+6}\color{blue}{+i +5i}=\color{red}{5}\color{blue}{+6i}\)
7. \((-9-3i)-(-4+5i)= -9-3i +4-5i =\color{red}{-9+4}\color{blue}{-3i -5i}=\color{red}{-5}\color{blue}{-8i}\)
8. \((-1+2i)+(1-2i)= -1+2i +1-2i =\color{red}{-1+1}\color{blue}{+2i -2i}=\color{red}{0}\)
9. \((10+3i)+(-8-8i)= 10+3i -8-8i =\color{red}{10-8}\color{blue}{+3i -8i}=\color{red}{2}\color{blue}{-5i}\)
10. \((5-8i)-(-10+9i)= 5-8i +10-9i =\color{red}{5+10}\color{blue}{-8i -9i}=\color{red}{15}\color{blue}{-17i}\)
11. \((-4-10i)-(4-4i)= -4-10i -4+4i =\color{red}{-4-4}\color{blue}{-10i +4i}=\color{red}{-8}\color{blue}{-6i}\)
12. \((-9+7i)-(8+4i)= -9+7i -8-4i =\color{red}{-9-8}\color{blue}{+7i -4i}=\color{red}{-17}\color{blue}{+3i}\)