How do you simplify: (5 - 3√-20) + (3 - 2√-45) ? put into the simpliest form, in the form of imaginary number.
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How do you simplify: (5 - 3√-20) + (3 - 2√-45) ? put into the simpliest form, in the form of imaginary number.

[From: ] [author: ] [Date: 12-07-06] [Hit: ]
......
(5 - 3√-20) + (3 - 2√-45)
= (5 - i*6√5) + (3 - i*6√5)
= 8 - i*12√5

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1st u need to make 2 root have be the same .
which they are root of 180 so
5-3 root-20+3-3 root20
= 8-3 root -40
=8- 3iroot 40
1
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