Which expression is equivalent to $(6t^4-3t^2+3t-6)-(2t^4-4t^3+6t^2-6… | Ronan SAT

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Question

Prompt

Which expression is equivalent to

(6 t^{4} - 3 t^{2} + 3 t - 6) - (2 t^{4} - 4 t^{3} + 6 t^{2} - 6)

?

4 t^{4} + 4 t^{3} - 9 t^{2} + 3 t - 12

A

4 t^{4} + 4 t^{3} - 9 t^{2} + 3 t

B

4 t^{4} + t^{3} + 9 t - 12

C

4 t^{4} + t^{3} + 3 t

D