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factor completely. Remember to look first for a common factor. if the polynomial is prime, state this.

-4t^2+64

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  1. I see a common factor of 4 and a hint of a difference of squares. But I would like the expression to start with a +

    = -4(t^2 - 16) , aahhh!
    = -4(t+4)(t-4)

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