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Mathematics 7 Online
OpenStudy (anonymous):

Which expression is the simplified form of

OpenStudy (anonymous):

\[\sqrt{z^7}\]

jhonyy9 (jhonyy9):

what is the exponent of squareroot ?

jhonyy9 (jhonyy9):

sqrta =a on what exponent ?

jhonyy9 (jhonyy9):

so what is a on exponent 1/2 ?

jhonyy9 (jhonyy9):

a^(1/2) = ?

jhonyy9 (jhonyy9):

so yes is sqrt(a) =a^(1/2)

OpenStudy (anonymous):

\[z^3\sqrt{z}\] i think this is it

jhonyy9 (jhonyy9):

there is z^3 sqrt(z) ?

OpenStudy (anonymous):

\[z \sqrt{z^3}\] \[z^2\sqrt{z}\] \[z^3\sqrt{z}\] \[z^3\sqrt{z^2}\] this is the choices

jhonyy9 (jhonyy9):

so z^7 =(z^3)^2 *z but sqrt(z^3)^2 =z^3 and from this result that inside radical will remain just z

OpenStudy (anonymous):

Im only in 8th grade and you are really confusing me .................

jhonyy9 (jhonyy9):

why ? we know that sqrt((z^3)^2) = z^3 yes ?

jhonyy9 (jhonyy9):

but inside radical there is z^7 =(z^3)^2 *z yes ?

jhonyy9 (jhonyy9):

so than because sqrt(z^3)^2 =z^3 so than sqrt(z^7) =z^3sqrt(z)

jhonyy9 (jhonyy9):

now is clearyfid ?

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