Complex equation

If c - d = 2 and c = 12 + 7 i, find d. Write the result in the form of a + bi.

Correct answer:

d = 10+7i

Step-by-step explanation:

cd=2 c = 12 + 7 i  cd=2 d = c2 d = (12+7i)2 d=10+7i

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