Posted by **alice** on Sunday, January 22, 2012 at 7:57pm.

1)3x^2-12x-21 solve by completing the square in simplest radical form

2) (1/x+3)-(2/3-x)=(4/x^2-9)find values of x

3)3/radical(3a^2b^4) is equivalent to

4) factor completely 27x^-75x^4

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