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Scorpion4ik [409]
4 years ago
11

Show that f (2-3i) is a real number

History
1 answer:
Nadusha1986 [10]4 years ago
7 0
It's not a real number. Remember that i represents √-1. The only way to make it a real number is to multiply i by itself (so i * i or i^2), which will make it -1

Distribute the f: 2f - (f*3i)

Since the i is still only to the power of 1, it is not a real number. It's imaginary
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