Optellen en aftrekken (a+bi)

Hoofdmenu Eentje per keer  🖨

Bereken

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

---

Bereken

Verbetersleutel

1. \((-9-2i)-(10-2i)= -9-2i -10+2i =\color{red}{-9-10}\color{blue}{-2i +2i}=\color{red}{-19}\)
2. \((4+5i)+(1+7i)= 4+5i +1+7i =\color{red}{4+1}\color{blue}{+5i +7i}=\color{red}{5}\color{blue}{+12i}\)
3. \((-10+8i)-(-6-9i)= -10+8i +6+9i =\color{red}{-10+6}\color{blue}{+8i +9i}=\color{red}{-4}\color{blue}{+17i}\)
4. \((-5-9i)-(-7-4i)= -5-9i +7+4i =\color{red}{-5+7}\color{blue}{-9i +4i}=\color{red}{2}\color{blue}{-5i}\)
5. \((9-6i)+(-3-9i)= 9-6i -3-9i =\color{red}{9-3}\color{blue}{-6i -9i}=\color{red}{6}\color{blue}{-15i}\)
6. \((-8+i)+(-7-8i)= -8+i -7-8i =\color{red}{-8-7}\color{blue}{+i -8i}=\color{red}{-15}\color{blue}{-7i}\)
7. \((1-7i)-(10-5i)= 1-7i -10+5i =\color{red}{1-10}\color{blue}{-7i +5i}=\color{red}{-9}\color{blue}{-2i}\)
8. \((-9+i)+(10-10i)= -9+i +10-10i =\color{red}{-9+10}\color{blue}{+i -10i}=\color{red}{1}\color{blue}{-9i}\)
9. \((8-3i)-(6+i)= 8-3i -6-i =\color{red}{8-6}\color{blue}{-3i -i}=\color{red}{2}\color{blue}{-4i}\)
10. \((3-4i)+(-1+i)= 3-4i -1+i =\color{red}{3-1}\color{blue}{-4i +i}=\color{red}{2}\color{blue}{-3i}\)
11. \((3+6i)+(2-i)= 3+6i +2-i =\color{red}{3+2}\color{blue}{+6i -i}=\color{red}{5}\color{blue}{+5i}\)
12. \((-9-6i)+(3+10i)= -9-6i +3+10i =\color{red}{-9+3}\color{blue}{-6i +10i}=\color{red}{-6}\color{blue}{+4i}\)