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Mathematics 14 Online
OpenStudy (anonymous):

Find the exact value of the radical expression in simplest form.

OpenStudy (anonymous):

\[\sqrt{s^8}+\sqrt{25s^8}-\sqrt{s^4}\]

OpenStudy (e.mccormick):

K. Start that one by finging what comes out from under the radicals.

OpenStudy (anonymous):

i had got \[8s^4- s^2\]

OpenStudy (anonymous):

@e.mccormick

OpenStudy (e.mccormick):

8? Not 8. Otherwise correct.

OpenStudy (anonymous):

but all the options i have have ^8

OpenStudy (e.mccormick):

\(s^4+5s^4-s^2\) so not 8.

OpenStudy (anonymous):

or 8s

OpenStudy (anonymous):

\[8s^4\] \[28s^4 \sqrt{s}\] \[8s^4-s^2\] \[28s^4\sqrt{s}-\]

OpenStudy (anonymous):

those are what i have to choose from

OpenStudy (e.mccormick):

Someone made a mistake there! The 25 part makes it a 6.

OpenStudy (e.mccormick):

If it was 49, then the root would be 7, and +1 would be 8. They made a mistake.

OpenStudy (anonymous):

so what would be the closest answer u think?

OpenStudy (e.mccormick):

What you chose. \(s^4+5s^4-s^2=6s^4+s^2\) So if it marks it wrong, complain with that information.

OpenStudy (anonymous):

ok i will

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