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9. For z = 4 + 3 i and w = 5 - 2 i , find zw . That is, determine (4 + 3

9. For z = 4 + 3i and w = 5 - 2i, find zw. That is, determine (4 + 3i) (5 - 2i) and simplify as much as possible, writing the result in the form a + bi, where a and b are real numbers.

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