Okay the paper says multiply by the conjuate

2+i

____ I think I multiply top and bottom by 4+2i but I'm not sure if I do that

4 +2i or if Im suppose to change the middle sign first or what..? Any advice?

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- November 4th 2008, 09:49 PMKeiaBlakeI'm so lost! Please help.
Okay the paper says multiply by the conjuate

2+i

____ I think I multiply top and bottom by 4+2i but I'm not sure if I do that

4 +2i or if Im suppose to change the middle sign first or what..? Any advice? - November 4th 2008, 11:44 PMmr fantastic
- November 4th 2008, 11:48 PMearboth