1) (10-3i)+(5-2i) = 10-3i+5-2i = 15 - 5i
2) (7-i)(3+5i) = 73 + 7*5i - 3i - 5i^2 = 21 + 35i - 3i + 5 = 26 + 32i
3) (2-3i)-(3i-2) = 2-3i-3i+2 = 4 - 6i
1) (10-3i)+(5-2i) = 10-3i+5-2i = 15 - 5i
2) (7-i)(3+5i) = 73 + 7*5i - 3i - 5i^2 = 21 + 35i - 3i + 5 = 26 + 32i
3) (2-3i)-(3i-2) = 2-3i-3i+2 = 4 - 6i