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Unformatted text preview: found by multiplying as if the numbers were binomials and using the fact that i2 = −1. Examples: Multiplying
• (2 − 4i)(3 + 5i) • (7 + 3i)2 4 ch prereq 6 notes.notebook September 05, 2013 5 ch prereq 6 notes.notebook September 05, 2013 Property of Complex Conjugates
• Example
For real numbers a and b, (a + bi)(a − bi) = a2 + b2. The product of a complex number and its conjugate is always a real number YOU TRY 1. 2. 6 ch prereq 6 notes.notebook September 05, 2013 7 ch prereq 6 notes.notebook September 05, 2013 Example
Solve x2 + x + 1 = 0 8...
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 Fall '13
 MicheleMurphy
 Complex Numbers

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