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Mathematics 17 Online
OpenStudy (anonymous):

Simplify.

OpenStudy (anonymous):

\[5\sqrt{7} + 12\sqrt{6} - 10\sqrt{7} - 5\sqrt{6}\]

OpenStudy (hockeychick23):

combine like terms so do 5√7-10√7 and do 12√6-5√6

OpenStudy (anonymous):

Combine the like terms

OpenStudy (anonymous):

im still confused do i add 7 6 7 6

OpenStudy (hockeychick23):

no so you do 5-10 first

OpenStudy (anonymous):

You add the ones that have the same sqrt roots at the end

OpenStudy (anonymous):

okay after 5 - 10 i subtract -5 from 7.?

OpenStudy (hockeychick23):

no so doing that you get-5√7

OpenStudy (hockeychick23):

whats under the square root doesn't change

OpenStudy (anonymous):

all i see are question marks when u type

OpenStudy (hockeychick23):

try refreshing the page, it should fix that

OpenStudy (anonymous):

Okay i did

OpenStudy (anonymous):

now subtract 5 - 10 which is -5

OpenStudy (anonymous):

that -5 is now infront of the first square root 7.?

OpenStudy (hockeychick23):

we already did that, so you got -5√7 and now have to do 12√6-5√6

OpenStudy (anonymous):

so 12 - 5?

OpenStudy (anonymous):

lol I see what he is talking about with the question marks it is hard to read

OpenStudy (hockeychick23):

correct

OpenStudy (anonymous):

so now its 7 square root of 6

OpenStudy (hockeychick23):

correct, so you get -5√7+7√6

OpenStudy (anonymous):

so -5 + 7 .?

OpenStudy (hockeychick23):

no, you cant simplify it any further, you have to leave it as -5√7+7√6

OpenStudy (anonymous):

so thats the answer.?

OpenStudy (hockeychick23):

yes, or you can write it as 7√6-5√7

OpenStudy (anonymous):

Thank you so much!! Sorry for not getting it quicker! Again thanks a lot!

OpenStudy (hockeychick23):

no problem!(:

OpenStudy (anonymous):

Could i just ask one more?

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