Optellen en aftrekken (a+bi)

Hoofdmenu Eentje per keer  🖨

Bereken

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

---

Bereken

Verbetersleutel

1. \((-5+5i)+(-9+2i)= -5+5i -9+2i =\color{red}{-5-9}\color{blue}{+5i +2i}=\color{red}{-14}\color{blue}{+7i}\)
2. \((-6+8i)-(-2-9i)= -6+8i +2+9i =\color{red}{-6+2}\color{blue}{+8i +9i}=\color{red}{-4}\color{blue}{+17i}\)
3. \((-10-3i)-(1+5i)= -10-3i -1-5i =\color{red}{-10-1}\color{blue}{-3i -5i}=\color{red}{-11}\color{blue}{-8i}\)
4. \((10+3i)+(5-7i)= 10+3i +5-7i =\color{red}{10+5}\color{blue}{+3i -7i}=\color{red}{15}\color{blue}{-4i}\)
5. \((-8-2i)+(-10-8i)= -8-2i -10-8i =\color{red}{-8-10}\color{blue}{-2i -8i}=\color{red}{-18}\color{blue}{-10i}\)
6. \((2+7i)+(-9+8i)= 2+7i -9+8i =\color{red}{2-9}\color{blue}{+7i +8i}=\color{red}{-7}\color{blue}{+15i}\)
7. \((5+7i)+(4-6i)= 5+7i +4-6i =\color{red}{5+4}\color{blue}{+7i -6i}=\color{red}{9}\color{blue}{+i}\)
8. \((5-9i)+(-3+7i)= 5-9i -3+7i =\color{red}{5-3}\color{blue}{-9i +7i}=\color{red}{2}\color{blue}{-2i}\)
9. \((-7-5i)+(2+4i)= -7-5i +2+4i =\color{red}{-7+2}\color{blue}{-5i +4i}=\color{red}{-5}\color{blue}{-i}\)
10. \((5-i)+(9+10i)= 5-i +9+10i =\color{red}{5+9}\color{blue}{-i +10i}=\color{red}{14}\color{blue}{+9i}\)
11. \((9-8i)-(-3-8i)= 9-8i +3+8i =\color{red}{9+3}\color{blue}{-8i +8i}=\color{red}{12}\)
12. \((5-10i)+(10+i)= 5-10i +10+i =\color{red}{5+10}\color{blue}{-10i +i}=\color{red}{15}\color{blue}{-9i}\)