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Mathematics 21 Online
OpenStudy (anonymous):

Simplify completely?

OpenStudy (anonymous):

0! ;D

OpenStudy (anonymous):

\(0!=1\)

OpenStudy (anonymous):

good point...let's just say "0" xD

OpenStudy (anonymous):

42 is the answer

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

\[\sqrt{18}- \sqrt{8}\]the problem is

OpenStudy (anonymous):

sorry didn't simplify all the way

OpenStudy (anonymous):

except the answer isn't 1 it is sqrt(2)

OpenStudy (anonymous):

yea i got \[\sqrt{2} \sqrt{2}\]

OpenStudy (anonymous):

im not sure if thats right

OpenStudy (anonymous):

\[\sqrt{2}\]oooo ok its just

OpenStudy (anonymous):

The answer is sqrt(2) just think about the problem like this you have sqrt(2*9) - sqrt(4*2) now you know the sqrt of 9 is 3 and the sqrt of 4 is 2 so you can take those out from under the root to get 3sqrt(2) - 2sqrt(2) then 3-2= 1 so you have 1*sqrt(2) or sqrt(2)

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