Optellen en aftrekken (a+bi)

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Bereken

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

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Bereken

Verbetersleutel

1. \((-6-3i)-(9+2i)= -6-3i -9-2i =\color{red}{-6-9}\color{blue}{-3i -2i}=\color{red}{-15}\color{blue}{-5i}\)
2. \((2-8i)+(-7-8i)= 2-8i -7-8i =\color{red}{2-7}\color{blue}{-8i -8i}=\color{red}{-5}\color{blue}{-16i}\)
3. \((-9+7i)-(-4-9i)= -9+7i +4+9i =\color{red}{-9+4}\color{blue}{+7i +9i}=\color{red}{-5}\color{blue}{+16i}\)
4. \((7-7i)-(-4-7i)= 7-7i +4+7i =\color{red}{7+4}\color{blue}{-7i +7i}=\color{red}{11}\)
5. \((10+7i)+(4+i)= 10+7i +4+i =\color{red}{10+4}\color{blue}{+7i +i}=\color{red}{14}\color{blue}{+8i}\)
6. \((-3-5i)+(1-i)= -3-5i +1-i =\color{red}{-3+1}\color{blue}{-5i -i}=\color{red}{-2}\color{blue}{-6i}\)
7. \((8-8i)-(-3+3i)= 8-8i +3-3i =\color{red}{8+3}\color{blue}{-8i -3i}=\color{red}{11}\color{blue}{-11i}\)
8. \((4-9i)-(-10-i)= 4-9i +10+i =\color{red}{4+10}\color{blue}{-9i +i}=\color{red}{14}\color{blue}{-8i}\)
9. \((2+i)+(7-3i)= 2+i +7-3i =\color{red}{2+7}\color{blue}{+i -3i}=\color{red}{9}\color{blue}{-2i}\)
10. \((5+6i)-(7+10i)= 5+6i -7-10i =\color{red}{5-7}\color{blue}{+6i -10i}=\color{red}{-2}\color{blue}{-4i}\)
11. \((-3-3i)+(6+9i)= -3-3i +6+9i =\color{red}{-3+6}\color{blue}{-3i +9i}=\color{red}{3}\color{blue}{+6i}\)
12. \((5+10i)+(7+5i)= 5+10i +7+5i =\color{red}{5+7}\color{blue}{+10i +5i}=\color{red}{12}\color{blue}{+15i}\)