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Mathematics 7 Online
OpenStudy (anonymous):

Perform the indicated operation. (-2+3i)+(-1-4i)

OpenStudy (anonymous):

plz really need help

OpenStudy (anonymous):

Alright, so all (-2+3i)+(-1-4i) means is: -2 + 3i -1 - 4i

OpenStudy (anonymous):

So then you combine like terms, -2 - 1 + 3i - 4i

OpenStudy (anonymous):

-3 - i is your final answer :)

OpenStudy (anonymous):

thank you so much really help, but can i ask u to help me with one more problem

OpenStudy (anonymous):

Sure

OpenStudy (anonymous):

i dont no how to simpliy somethind in this form

OpenStudy (anonymous):

You're just going to FOIL for that. Do you know how to do that?

OpenStudy (anonymous):

no there was nothing like that in my video lesson

OpenStudy (anonymous):

So if we have (4x+6)(x+2), for example, You're going to do this: |dw:1381945904390:dw| Just multiplying. So all you're going to do with that problem is multiply the fractions in this fashion. Remember that i^2 is equal to -1 :)

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