Optellen en aftrekken (a+bi)

Hoofdmenu Eentje per keer  🖨

Bereken

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

---

Bereken

Verbetersleutel

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