Apply the parallelogram law to get the sum and difference of the following complex numbers. For verification of the results, direct addition and subtraction can be used. a) u = 2 + 3i, v = 1 − 2i b) u...

Apply the parallelogram law to get the sum and difference of the following complex numbers. For verification of the results, direct addition and subtraction can be used.

a) u = 2 + 3i, v = 1 − 2i

b) u = 4 + 7i, v = −2 − 3i

c) u = −3, v = −3 − 4i

d) u = 4 + 3i, v = 3 + 4i