SOLUTION: (4sqrt3)(5sqrt9)<<<< both square roots have an index to the 3rd power. 4*5 * sqrt3 * sqrt9<<< both square roots have an index to the 3rd power. 20sqrt27<< with an index to th

Algebra ->  Square-cubic-other-roots -> SOLUTION: (4sqrt3)(5sqrt9)<<<< both square roots have an index to the 3rd power. 4*5 * sqrt3 * sqrt9<<< both square roots have an index to the 3rd power. 20sqrt27<< with an index to th      Log On


   



Question 801151: (4sqrt3)(5sqrt9)<<<< both square roots have an index to the 3rd power.
4*5 * sqrt3 * sqrt9<<< both square roots have an index to the 3rd power.
20sqrt27<< with an index to the 3rd power.
20sqrt3*sqrt9<<<< both with an index to the 3rd power.
20(3)sqrt3 with an index of 3.
60sqrt3 with an index of 3 as my final answer.
Is my final answer correct? what are the errors I have made if any?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(4sqrt3)(5sqrt9)<<<< both square roots have an index to the 3rd power.
---------
4*cbrt(3)*5*cbrt(9)
----
= 20*cbrt(3*9)
----
= 20*cbrt(27)
----
= 20*3
----
= 60
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Cheers,
Stan H.