Which expression is equivalent to \((x^3 + 4x^2 - 4x) + 7(x^2 + 8)\)? | Ronan SAT

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Question

Prompt

Which expression is equivalent to

(x^{3} + 4 x^{2} - 4 x) + 7 (x^{2} + 8)

?

x^{3} + 7 x^{2} - 4 x + 56

A

x^{3} + 4 x^{2} - 4 x + 56

B

x^{3} + 11 x^{2} - 4 x + 56

C

x^{3} + 8 x^{2} - 4 x + 56

D