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Mathematics 10 Online
OpenStudy (anonymous):

square root 605/9

OpenStudy (anonymous):

are both numbers under the square root sign?

OpenStudy (anonymous):

\[\sqrt{605\div9}\] yes but 9 is under 605

OpenStudy (anonymous):

If we write 605 as its prime factors we get 11*11*5 we know the square root of 9 is 3 so therefor we end up with 11(√5)/3

OpenStudy (anonymous):

A.605/9 both under sq.root B.121sr5 over 9 C.11sr5 over 3 D.sqroot 605 over 3

OpenStudy (anonymous):

Basically the first step is to write as products of primes: \[\sqrt{11*11*5/(3*3)}\] If you repeat a number then you can pull it out of the square root: \[11\sqrt{5}/\]

OpenStudy (anonymous):

oops forgot the 3. C.11sr5 over 3

OpenStudy (anonymous):

how did you do the sr sign

OpenStudy (anonymous):

either using the equation tool under the post box (this will let you put in other symbols as well) or on a mac you can hold "alt" and hit "v"

OpenStudy (anonymous):

what goes in to 605

OpenStudy (anonymous):

first I divided by 5 (as it ends in 5) to get 121*5 = 605 then if you know 11*11 = 121 then you have 11*11*5 = 605

OpenStudy (anonymous):

yay thank you so much

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