Optellen en aftrekken (a+bi)

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Bereken

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

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Bereken

Verbetersleutel

1. \((6+2i)-(-5+3i)= 6+2i +5-3i =\color{red}{6+5}\color{blue}{+2i -3i}=\color{red}{11}\color{blue}{-i}\)
2. \((-10+4i)-(4-9i)= -10+4i -4+9i =\color{red}{-10-4}\color{blue}{+4i +9i}=\color{red}{-14}\color{blue}{+13i}\)
3. \((-6-8i)+(-10-7i)= -6-8i -10-7i =\color{red}{-6-10}\color{blue}{-8i -7i}=\color{red}{-16}\color{blue}{-15i}\)
4. \((-3-7i)+(-1+7i)= -3-7i -1+7i =\color{red}{-3-1}\color{blue}{-7i +7i}=\color{red}{-4}\)
5. \((-3-10i)-(8-8i)= -3-10i -8+8i =\color{red}{-3-8}\color{blue}{-10i +8i}=\color{red}{-11}\color{blue}{-2i}\)
6. \((-5-i)-(8+3i)= -5-i -8-3i =\color{red}{-5-8}\color{blue}{-i -3i}=\color{red}{-13}\color{blue}{-4i}\)
7. \((-5-9i)-(7-2i)= -5-9i -7+2i =\color{red}{-5-7}\color{blue}{-9i +2i}=\color{red}{-12}\color{blue}{-7i}\)
8. \((-10-8i)-(4-3i)= -10-8i -4+3i =\color{red}{-10-4}\color{blue}{-8i +3i}=\color{red}{-14}\color{blue}{-5i}\)
9. \((1+8i)-(-8+7i)= 1+8i +8-7i =\color{red}{1+8}\color{blue}{+8i -7i}=\color{red}{9}\color{blue}{+i}\)
10. \((9-5i)+(-4-3i)= 9-5i -4-3i =\color{red}{9-4}\color{blue}{-5i -3i}=\color{red}{5}\color{blue}{-8i}\)
11. \((-5-6i)+(3+3i)= -5-6i +3+3i =\color{red}{-5+3}\color{blue}{-6i +3i}=\color{red}{-2}\color{blue}{-3i}\)
12. \((-7-8i)-(4+7i)= -7-8i -4-7i =\color{red}{-7-4}\color{blue}{-8i -7i}=\color{red}{-11}\color{blue}{-15i}\)