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October 21, 2014

October 21, 2014

Posted by **Trina** on Sunday, September 5, 2010 at 11:31am.

- algebra -
**bobpursley**, Sunday, September 5, 2010 at 11:37amchange b^9 to b^8*b

sqrt (5b^8*b)=b^4 sqrt5b

now cube all that.

b^12 (5b)sqrt5b

- algebra -
**drwls**, Sunday, September 5, 2010 at 11:44am[sqrt(5 b^9]^3 = [(5 b^9)^(1/2)]^3

= 5^(3/2) * b^(9/2)

= 11.18034.. b^(9/2)

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