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hey, how's it going?

hi can you help me?

sure, first do you know how to simplify sqrt(18) and sqrt(8)?

yes i simplified the problem to \[3+3\sqrt{2}/1+2\sqrt{2}\]

good!

i did that too.

so for this case, you would multiply it by (1-2sqrt(2))/(1-2(sqrt(2))

\[1-2\sqrt{2}\] right?

right, so did you multiply the top and bottom by that?

i did but i erased it.

but just foil right? i get the top part but the bottom confuses me.

what confuses you about the bottom part? what did you get for the top?

i got \[3-6\sqrt{2}+6\sqrt{2}-12\] simplified to -9

WHat hold on somyjing looks rwong

thats what i figured i got everything till the foiling part

bob how did you do this

2sqrt(2)*3sqrt(2) is what?

\[6\sqrt{2}\]

well no, that is 12, but you got that part right, your mistake was 3sqrt(2) * 1 i believe

oh your right... i thought i was going to be able to eliminate the roots in the middle...

\[3-6\sqrt{2}+3\sqrt{2}\] -12 right?

looks good for the top

i kept getting 1-8

looks good, so what's your end answer?

hold on i haven't solved it yet, thought you were going to say i was wrong.

where's your confidence? :)

not in my math capabilities thats for sure haha. \[-9-3\sqrt{2}/-7\]

okay so the numbers are right but my text book says all the nubmer are positive.

parentheses? the ones used to foil? and okay thank you soo much your very helpful.