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?
:P thanks haha :=)
show ur work plz :=)
your welcome! I hope you get many medals :) |dw:1441041648467:dw| |dw:1441041814049:dw|
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?
\[\large\rm i=\sqrt{-1}~~~~~~~so~~i^2=?\]
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