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anonymous
 5 years ago
find the product for (5+3i)(53i)... I got 249a. Does anyone know if this is correct?
anonymous
 5 years ago
find the product for (5+3i)(53i)... I got 249a. Does anyone know if this is correct?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Should be 259i. You use foil if you've ever been taught that.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah, that's what I used.. and since the 9i was squared i added a 1. must have calculated it our wrong. Thanks

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah, do the i's cancel out? So it would be 259?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And actually should be adding. Let's start over lol.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0259i^2. That is what you should get, which can be simplified.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok so I can add the 2 and the 25?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok. So i represents an imaginary number, it's what you get when you take the square root of a negative number. And the ^ is raised to a power. So we have 259i^2. So if \[i=\sqrt{1}\] then \[i^2=1\] So we get 259(1)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok so would that be the answer? or can I simplify from there? Since there aren't any i's do I need to add those all to get one number?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yes to more simplifying. 259(1) is the same as 25+9=34

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh so the answer should be just 34?
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