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March 1, 2015

March 1, 2015

Posted by **Mary** on Friday, April 29, 2011 at 6:11pm.

(4x^2+2x-4) - (x^2-5x-4)=

I came up with 3x^2+7 is my answer correct?

- algebra -
**MathMate**, Friday, April 29, 2011 at 6:17pmThe first term 3x² is correct.

The next term should be

2x-(-5x)=7x

The third term is -4-(-4)=0 (as you had it)

So the answer is 3x²+7x.

You were close.

- algebra -
**Mary**, Friday, April 29, 2011 at 6:23pmThank you math mate

- algebra :) -
**MathMate**, Friday, April 29, 2011 at 6:33pmYou're welcome!

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