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Mathematics 9 Online
OpenStudy (anonymous):

PLEASE HELP!!! THE PROBLEM WILL BE ON THE SIDE!

OpenStudy (anonymous):

\[\sqrt{12}+3\sqrt{75}-2\sqrt{27}\]

OpenStudy (raden):

set 12 = 4 * 3 75 = 25 * 3 27 = 9 * 3

OpenStudy (raden):

sqrt(12) = sqrt(4 * 3) = sqrt(4) * sqrt(3) = 2 sqrt(3) do same idea to simplify sqrt(75) and sqrt(27)

OpenStudy (anonymous):

Can you show me how to work through it?

OpenStudy (raden):

well, once again 3 sqrt(75) = 3 sqrt(25 * 3) = 3 sqrt(25) * sqrt(3) = 3 * 5 * sqrt(3) = 15 sqrt(3) does that make sense ?

OpenStudy (raden):

remember the property of sqrt(a * b) = sqrt(a) * sqrt(b)

OpenStudy (raden):

and a * (b sqrt(c)) = (a*b) sqrt(c)

OpenStudy (anonymous):

i am writing down

OpenStudy (raden):

got it ?

OpenStudy (anonymous):

sorry I am trying

OpenStudy (anonymous):

|dw:1373651689198:dw|

OpenStudy (anonymous):

is that right? @RadEn

OpenStudy (raden):

the figure is cut, i cant see right part

OpenStudy (raden):

|dw:1373652293235:dw|

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