Решение:
- \( (-2+3j) + (7-2j) = (-2+7) + (3-2)j = 5 + j \)
- \( (6+2j) + (5+3j) = (6+5) + (2+3)j = 11 + 5j \)
- \( (3-2j) - (5+j) = (3-5) + (-2-1)j = -2 - 3j \)
- \( (4+2j) - (-3+2j) = (4-(-3)) + (2-2)j = 7 + 0j = 7 \)
- \( (5-4j) + (-3+j) = (5-3) + (-4+1)j = 2 - 3j \)
- \( (-8,5-j) + (-2+4j) = (-8.5-2) + (-1+4)j = -10.5 + 3j \)
- \( 7i - (4-5i) = -4 + (7-(-5))i = -4 + 12i \)
Ответ: 1. 5+j; 2. 11+5j; 3. -2-3j; 4. 7; 5. 2-3j; 6. -10.5+3j; 7. -4+12i