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Mathematics 64 Online
mxddi3:

simplify the radical: I'll post it,one sec.

mxddi3:

\[3\sqrt{18x^2}\] @jhonyy9

jhonyy9:

18 = ? how can you rewrite the 18 like a product of a square number and a number

mxddi3:

i took the sqrt of 18 and made it into \[\sqrt{9} * \sqrt{2}\] then the sqrt of 9 is 3 that's how the teacher taught us. is that correct.

jhonyy9:

yes correct

jhonyy9:

so how will get simplified this all ?

mxddi3:

so then she told us to find the sqrt of x^2 and i got x is that right?

jhonyy9:

yes

jhonyy9:

and the sqrt of 9 = ?

mxddi3:

3

jhonyy9:

exactly ansd so inside radical will remain just what ?

mxddi3:

is it 2? because the sqrt of 18 was \[\sqrt{9} * \sqrt{2}\] and sqrt 2 can't be simplified ?

jhonyy9:

yes correct so now please write me here how will be this 3sqrt18x^2 simplified ?

mxddi3:

but wait, what about the 3 in front of the radical? so i multiply it with the 3 from the sqrt of 9?

jhonyy9:

yes - what is the problem with this 3 ? nothing

mxddi3:

ok so we will have \[3*3x \sqrt{2}\] and will that be \[9x \sqrt{2}\]

jhonyy9:

perfect - congrats - hope you understand it now sure right

mxddi3:

yes, thank you!!

jhonyy9:

yw - anytime - with my pleasure

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