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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:
\[11\sqrt{5}/\]
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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
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