The side length, s, of a cube is 4x2 + 3. If V = s3, what is the volume of the cube?

Substitute the side length into the volume formula: V = (4x² + 3)³. Using (a + b)³ = a³ + 3a²b + 3ab² + b³, this becomes 64x⁶ + 144x⁴ + 108x² + 27. So the volume is choice A.

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