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Mathematics 10 Online
OpenStudy (anonymous):

√128x^7y^10

OpenStudy (anonymous):

\[\sqrt{128x^7y^{10}}=\sqrt{2^7x^7y^{10}}\] is a start

OpenStudy (anonymous):

I know my perfect square is 64 but not sure what to do with my odd exponents. It says "Assume all variables represent positive real numbers"

OpenStudy (anonymous):

then see what comes outside of the radical two goes in to seven three times with a remainder of 1, so \(2^3\) comes out and a \(2\) stays in also for \(x\) it is the same \(x^3\) comes out, \(x\) stays in two goes in to ten five times with no remainder, \(y^5\) comes out

OpenStudy (anonymous):

5th root of(128x^7y^10) = 5th root of(32*4 * (x^5)(x^2) * (y^10) = 5th root of((2^5)*4 * (x^5)(x^2) * (y^2)^5) = 2xy^2 (5th root of(4x^2))

OpenStudy (anonymous):

final answer is \[8x^3y^5\sqrt{2x}\]

OpenStudy (anonymous):

Thank you satellite 73, tremendously helpful!!

OpenStudy (anonymous):

yw (easy when you see what to do right? works with any radical)

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