Multiply complex numbers

1. 1.
   Simplify: (6+5i)(-4+3i)
2. 2.
   Simplify: (-5+i)(4-5i)
3. 3.
   Simplify: (-3+4i)(4+6i)
4. 4.
   Simplify: (-2-4i)(-4-4i)
5. 5.
   Simplify: (-4-i)(-2-i)
6. 6.
   Simplify: (-2i)(-2+6i)
7. 7.
   Simplify: (-3-i)(-5-3i)
8. 8.
   Simplify: (-3+i)(5+4i)
9. 9.
   Simplify: (1+i)(3-3i)
10. 10.
    Simplify: (-3i)(-3+6i)
11. 11.
    Simplify: (5+5i)(-1-6i)
12. 12.
    Simplify: (4-2i)(6+3i)
13. 13.
    Simplify: (4+2i)(-1-2i)
14. 14.
    Simplify: (-1+6i)(-2-6i)
15. 15.
    Simplify: (-1-2i)(6+6i)
16. 16.
    Simplify: (-6+6i)(3+6i)
17. 17.
    Simplify: (-3-5i)(5-5i)
18. 18.
    Simplify: (-2i)(-3+5i)
19. 19.
    Simplify: (-1-i)(6-5i)
20. 20.
    Simplify: (-6-6i)(-2+3i)

Free maths worksheets and practice: rocketdigits.com/learn/multiply-complex-numbers