okay im back with more questions and more medals to give out nnesha is very good at helping ppl so if you have questions and shes on youll do wonderfully and that goes for jim but hes not one yet. okay back to the problem at hand. (-8+i) (-8-i) i got 64i - i bc i foiled btu they want this in standard form what did i do wrong?

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okay im back with more questions and more medals to give out nnesha is very good at helping ppl so if you have questions and shes on youll do wonderfully and that goes for jim but hes not one yet. okay back to the problem at hand. (-8+i) (-8-i) i got 64i - i bc i foiled btu they want this in standard form what did i do wrong?

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:P thanks haha :=)
show ur work plz :=)
your welcome! I hope you get many medals :) |dw:1441041648467:dw| |dw:1441041814049:dw|

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Other answers:

to foil two parentheses box method would be great/neat |dw:1441042176623:dw|i times -i = ??
when you multiply same bases you should `add` their exponents
okay i remember here is rule a while ago but i cant remember it that well.
alright so when we multiply same bases we should add their exponents \[\huge\rm x^m \times x^n=x^{m+n}\]
i is same as i to the one power so \[\huge\rm i^1 \times i^1=??\]
the thing i guess that is confusing me is the fact that my problem does not contain exponents. The i thing does sort of make sense.
no there is an exponent `invisible one`
i is same as i^1
okay
so my negative i should be squared then your suposed to take (-1) (-i) i^2
to make it with out its exponent
multiply i times i which is i^2 and i^2 =what ?
i?
\[\large\rm i=\sqrt{-1}~~~~~~~so~~i^2=?\]
so is it just -1? im still confused
yes right i^2=-1
you should remember 4 cycle of i \[\rm i=\sqrt{-1}\]\[\rm i^2=-1\] \[\rm i^3=-i\]\[\rm i^4=1\]
so the answer should be 63?
if you know that then you can find i^999
nope
i have no clue
it's |dw:1441043195360:dw| i times -1 forgot the negative
i times -i**
|dw:1441043278896:dw| i^2=-1 now distribute -(-1) then combine them
you gotta be careful about signs especially negative
so 64 -(-1) = 64+1 = 65
\(\huge\color{green}{\checkmark}\)
great job!
okay let me check it on my math lab
you rock!!
:=) i like to work with somone who `really` wants to learn not just waiting for the answer so great job!
thank you i used to be really good at math but since ive graduated its like ive lost almost everything but your refreshing my memory! (;
aww congrats! so are u going to take calculus one right ? good luck!
nope lol im not in calculus i wish i knew calculus it would give me an advantage im in a math prep for college and then im in an actual college class that will adventually teach us calculus.
at GGC
ohh okay
ill be on later im gonna attempt to work on some of these by my self now the foil with the i is still a bit confusing though.
the prob was (2+7i)^2 and they want me to use foil i got 4+77i which is not correct
(2+7i)^2 is same as (2+7i)(2+7i) now foil!
okay im gonna go step by step with how i got 4+77i
alright so plz show ur work :=)
|dw:1441044467368:dw|
|dw:1441044870538:dw|
okay so instead it is 4+28i+49 then i would add the 4+49 = 53+28i?
no it's \[\huge\rm 4+28i+49i^2=4+28i+49(-1)\] 49 is positive before u distribute by negative on
ah okay the signs get me again. then this should be -45+28i
looks good!
okay one moment
okay
your name proves you well you are definatly the human calculator (: it was correct
haha thanks for the compliment lol there are like 1000+ users who really good at math i'm just fine :3
Lol well your help has worked wonders i will talk to you again later. Thank you!!
okay :D
& my pleasure :=)

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