Optellen en aftrekken (a+bi)

Hoofdmenu Eentje per keer  🖨

Bereken

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

---

Bereken

Verbetersleutel

1. \((8-8i)+(10+6i)= 8-8i +10+6i =\color{red}{8+10}\color{blue}{-8i +6i}=\color{red}{18}\color{blue}{-2i}\)
2. \((-2+10i)+(-2-4i)= -2+10i -2-4i =\color{red}{-2-2}\color{blue}{+10i -4i}=\color{red}{-4}\color{blue}{+6i}\)
3. \((5+4i)+(-7+7i)= 5+4i -7+7i =\color{red}{5-7}\color{blue}{+4i +7i}=\color{red}{-2}\color{blue}{+11i}\)
4. \((-6-3i)-(-4+4i)= -6-3i +4-4i =\color{red}{-6+4}\color{blue}{-3i -4i}=\color{red}{-2}\color{blue}{-7i}\)
5. \((-10+10i)-(1-5i)= -10+10i -1+5i =\color{red}{-10-1}\color{blue}{+10i +5i}=\color{red}{-11}\color{blue}{+15i}\)
6. \((-5+7i)+(9-10i)= -5+7i +9-10i =\color{red}{-5+9}\color{blue}{+7i -10i}=\color{red}{4}\color{blue}{-3i}\)
7. \((7-4i)-(10+5i)= 7-4i -10-5i =\color{red}{7-10}\color{blue}{-4i -5i}=\color{red}{-3}\color{blue}{-9i}\)
8. \((6-2i)+(10-6i)= 6-2i +10-6i =\color{red}{6+10}\color{blue}{-2i -6i}=\color{red}{16}\color{blue}{-8i}\)
9. \((-10-8i)-(-9-8i)= -10-8i +9+8i =\color{red}{-10+9}\color{blue}{-8i +8i}=\color{red}{-1}\)
10. \((8+i)+(-2+2i)= 8+i -2+2i =\color{red}{8-2}\color{blue}{+i +2i}=\color{red}{6}\color{blue}{+3i}\)
11. \((-2-4i)-(-2-8i)= -2-4i +2+8i =\color{red}{-2+2}\color{blue}{-4i +8i}=\color{blue}{4i}\)
12. \((-8+7i)-(-4-10i)= -8+7i +4+10i =\color{red}{-8+4}\color{blue}{+7i +10i}=\color{red}{-4}\color{blue}{+17i}\)