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                              Complex Numbers
                   Addition, Subtraction, and Multiplication
Simplify.
1.    (1 + 2i) + (2 + 3i)         2.   (3 + 4i) + (1 - 5i)              3.      (-1 - 2i) + (5 - 6i)



4.    (7 - 5i) - (-4 - 3i)        5.   (9 + 8i) + (-6 + 11i)            6.      (4 - 12i) + (-9 + 7i)



7.    (16 + 8i) + (-12 - 5i)      8.   (7 + 7i) + (5 + 5i)              9.      (-4 + 6i) - (-4 + 3i)



10.   (3 + 5i) + (-2 - 7i) - (6 + 2i) - (-4 - 3i)




Multiply and simplify.
11.   (1 - 2i) (2 + 3i)                              12.    (3 + 4i) (4 - 3i)



13.   (5 - 4i) (5 + 4i)                              14.    (-4 + 3i) (4 + 5i)



15.   (3 - 6i) (1 - 4i) + i (2 - 4i)                 16.    (1 - 2i) (2 + 3i) - 3i (1 + 2i)




17.   (-5 - 3i) (-5 + 3i) + i(2 - 4i) (2 + 4i)       18.    (11 - 3i) (2 - 7i) - (7 + 5i) i




19.   (-2 - 4i) (-5 - 7i) - 2i(3 - 2i) (1 - 3i)      20.    i(-2 - 3i) (2 - 2i) + i(3 - i) (3 + 4i)




                                                  Complex Numbers - Add, Subtract and Multiply - Mr. Roberts