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Mathematics 8 Online
OpenStudy (anonymous):

(8-3i)(6+i)

OpenStudy (anonymous):

51-10i

OpenStudy (anonymous):

Yeah but how does -3i^2 become just 3

OpenStudy (anonymous):

You just multiply the two

OpenStudy (nikato):

|dw:1389932328840:dw|

OpenStudy (anonymous):

exactly

OpenStudy (anonymous):

okay, but how does i^2 =-1 I'm not trying to be difficult I just don't understand how it becomes -1

OpenStudy (anonymous):

It just does, it a law in math

OpenStudy (nikato):

|dw:1389932557061:dw|

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