Just a quick question (-9+i)-(4-i) Does it equal 13 or is it 13+i ?

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Just a quick question (-9+i)-(4-i) Does it equal 13 or is it 13+i ?

Mathematics
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well -9-4=? and i-(-i)=?
i is an imaginary number
I assumed so

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\[(-9+i) -(4-i) \\ (-9-4)+(i-(-i))\] you still need to simplify real part and imaginary part
So it's -13+i ?
not quite
i-(-i) is i+i
which is 2i
Oh 2i
yes so -13+2i
Thank you!
all i did was take the terms in the first parenthesis and put a minus sign the wrote the terms in the second parenthesis
|dw:1442268426248:dw|
anyways peace

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