Optellen en aftrekken (a+bi)

Hoofdmenu Eentje per keer  🖨

Bereken

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

---

Bereken

Verbetersleutel

1. \((-6-2i)-(8+i)= -6-2i -8-i =\color{red}{-6-8}\color{blue}{-2i -i}=\color{red}{-14}\color{blue}{-3i}\)
2. \((-10+3i)+(-5-3i)= -10+3i -5-3i =\color{red}{-10-5}\color{blue}{+3i -3i}=\color{red}{-15}\)
3. \((-7-3i)+(-5+3i)= -7-3i -5+3i =\color{red}{-7-5}\color{blue}{-3i +3i}=\color{red}{-12}\)
4. \((-1-9i)+(7+6i)= -1-9i +7+6i =\color{red}{-1+7}\color{blue}{-9i +6i}=\color{red}{6}\color{blue}{-3i}\)
5. \((5+6i)-(4-4i)= 5+6i -4+4i =\color{red}{5-4}\color{blue}{+6i +4i}=\color{red}{1}\color{blue}{+10i}\)
6. \((-7+8i)-(-3-4i)= -7+8i +3+4i =\color{red}{-7+3}\color{blue}{+8i +4i}=\color{red}{-4}\color{blue}{+12i}\)
7. \((6+6i)-(2+4i)= 6+6i -2-4i =\color{red}{6-2}\color{blue}{+6i -4i}=\color{red}{4}\color{blue}{+2i}\)
8. \((-6+3i)-(4-i)= -6+3i -4+i =\color{red}{-6-4}\color{blue}{+3i +i}=\color{red}{-10}\color{blue}{+4i}\)
9. \((-8+6i)-(10+4i)= -8+6i -10-4i =\color{red}{-8-10}\color{blue}{+6i -4i}=\color{red}{-18}\color{blue}{+2i}\)
10. \((-10-4i)+(-10-i)= -10-4i -10-i =\color{red}{-10-10}\color{blue}{-4i -i}=\color{red}{-20}\color{blue}{-5i}\)
11. \((-1-5i)+(2+2i)= -1-5i +2+2i =\color{red}{-1+2}\color{blue}{-5i +2i}=\color{red}{1}\color{blue}{-3i}\)
12. \((-7-6i)-(-4+3i)= -7-6i +4-3i =\color{red}{-7+4}\color{blue}{-6i -3i}=\color{red}{-3}\color{blue}{-9i}\)