Posted by **Nadine** on Friday, October 24, 2008 at 11:01pm.

Is this equation right is it worked correctly x 1

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x2-4 x2+4x+4

This is how she simplified it:

x(x2+4x+4) - 1(x2-4)

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(x2-4)(x2+4x+4)

x3+4x2+4x-x2+4

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x4+4x3-16x-16

x3+3x2+4x+4

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x4+4x3-16x-16

1+3x2+1+1

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x4+4-4-4

3+3x2

------

x4-4

3+3

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x2-4

6

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x2-4

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