Optellen en aftrekken (a+bi)

Hoofdmenu Eentje per keer  🖨

Bereken

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

---

Bereken

Verbetersleutel

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