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

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Question

Prompt

Which expression is equivalent to

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

?

x^{3} + 7 x^{2} - 6 x + 24

A

x^{3} + 3 x^{2} - 6 x + 24

B

x^{3} + 4 x^{2} - 6 x + 24

C

x^{3} + 6 x^{2} - 6 x + 24

D