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Mathematics 9 Online
OpenStudy (anonymous):

Can someone help me with this problem?

OpenStudy (anonymous):

\[(3\sqrt{5}+8i) + (-\sqrt{45} -6i)\]

OpenStudy (anonymous):

I think you use FOIL. right?

OpenStudy (anonymous):

You wouldn't use foil because you are not multiplying.

OpenStudy (anonymous):

ok...then what would i do?? so confused. -.-

OpenStudy (anonymous):

Add like terms. 8i and -6i

OpenStudy (anonymous):

But first get rid of the parentheses.

OpenStudy (precal):

|dw:1354471689033:dw|

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