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April 1, 2015

April 1, 2015

Posted by **Jessica** on Monday, July 20, 2009 at 7:43pm.

b^4+13b^2+36 = 0

- algebra -
**Marth**, Monday, July 20, 2009 at 8:00pmFactor into (b^2 + 9)(b^2 + 4)=0

b^2 = -9

b = +/- 3i

b^2 = -4

b = +/- 2i

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