Homework Help: Math-Involing i's

Posted by Joey on Thursday, December 11, 2008 at 11:24pm.

1)What is the product of 5+ Radical (-36) and 1-Radical (-49) expressed in simplest a+bi Form?

2) Express Radical (-27) + i^22 + 3-Radical (-25) +5 Radical (-3) in simplest a+bi form.

Math-Involing i's - Reiny, Friday, December 12, 2008 at 12:24am
(5 + √-36)(1-√-49)
= (5 + 6i)(1 - 7i)
= 5 - 35i + 6i - 42i^2
= 5 - 29i + 42
= 49 - 29i

2) √-27 + i^22 + 3 - √-25 + 5√-3
= 3√3i + (-1) + 3 - 5i + 5√3i
= 8√3i - 5i + 2
= (8√3 - 5)i + 2
Math - Deep Thought Computer, Saturday, July 14, 2012 at 2:43pm
Try '42'. It is the answer to Life, the Universe, and Everything.
Math-Involing i's - Anonymous, Thursday, August 23, 2012 at 8:45pm
12,8 and 3,-4
Math-Involing i's - Anonymous, Sunday, December 2, 2012 at 1:16pm
pnus

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