SOLUTION: Express (2squareroot 7)cubed in the form a squareroot 7 where a is an integer. I can get answer on calculator I just don't understand how to get it.

SOLUTION: Express (2squareroot 7)cubed in the form a squareroot 7 where a is an integer. I can get answer on calculator I just don't understand how to get it.

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Question 233292: Express (2squareroot 7)cubed in the form a squareroot 7 where a is an integer.
I can get answer on calculator I just don't understand how to get it.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Express (2sqrt 7)^3 in the form a squareroot 7 where a is an integer.
----------------------------
(2sqrt(7))^3 = (2sqrt(7))^2*(2sqrt(7)
---
= 4*7*2sqrt(7)
= 56sqrt(7)
==================
Cheers,
Stan H.
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