# math

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4 [(4x^2 + 4x)]^2 + 4(4x^2 + 4x)
I got up to:

16 ( 4x^4 + 8x^3 + 5x^2 + x)

Is this right and also the domain is X is all real numbers? (-infinity, infinity)?

• math -

I could probably factor another x out:

16x ( 4x^3 + 8x^2 + 5x + 1)

So X | E R?

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