Posted by **Erika** on Thursday, September 30, 2010 at 6:25pm.

Simplify:

2xsquared minus 4xsquared

- Math -
**Anonymous**, Thursday, September 30, 2010 at 6:27pm
-12x

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**Henry**, Thursday, September 30, 2010 at 10:28pm
2x^2 - 4x^2 = -2x^2.

- Math -
**PsyDAG**, Friday, October 1, 2010 at 3:05pm
Henry is right.

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