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October 2, 2014

October 2, 2014

Posted by **toni** on Tuesday, October 8, 2013 at 2:02pm.

3x^2 +21x=0

is the root 7

- algebra -
**Reiny**, Tuesday, October 8, 2013 at 2:52pmfactor it

3x(x+7) = 0

so

3x=0 or x+7=0

x = 0 or x = -7

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