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Mathematics 8 Online
OpenStudy (anonymous):

simplify the following radical. ...

OpenStudy (anonymous):

\[\sqrt{18x ^{13}}\]

hartnn (hartnn):

hint : 18 = 2*9 \(x^{13}=x.x^{12}\)

OpenStudy (anonymous):

\[3^{x6\sqrt{2x }}\]

OpenStudy (anonymous):

is the answer...

hartnn (hartnn):

if you meant \(3x^6\sqrt{2x}\) then its correct.

hartnn (hartnn):

u know how ?

OpenStudy (anonymous):

nope.. lol. not at all actually

OpenStudy (anonymous):

thats what i meant... :)

hartnn (hartnn):

u know that \(\sqrt a^2=a \) ?

OpenStudy (anonymous):

so whatever a squared is, would still just be the base?

OpenStudy (anonymous):

\[\sqrt{12^{2}} would =12?\]

OpenStudy (anonymous):

im horrible at this.. lol. sorry

hartnn (hartnn):

\(\large \sqrt{18x ^{13}} = \sqrt{(2*3^2)(x^1.x^{12})}\) did u get that ^ ?

OpenStudy (anonymous):

ok.. step by step... (2x3)= \[6^{2}\] ?

hartnn (hartnn):

\(\large 18=2*9=2*3^2\) ok ?

OpenStudy (anonymous):

ooohh, ok, got it...

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