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93291kitty
4t^4 - 64 is your answer if you use FOIL
Apocrophon
Note: (t-2)(4t^{2}+16)(t-2) is fully expanded if you're not using complex numbers.

Using imaginary roots:
[tex](t-2)(4t^{2}+16)(t-2)\\\\(t-4i)(t+4i)(t-2)(t+2)[/tex]

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