已知f(x)=x3+1f(x) = x^3 + 1f(x)=x3+1,则f(2x)=f(2x) =f(2x)=( ).
(A)8x3+18x^3 + 18x3+1
(B)8x4+18x^4 + 18x4+1
(C)x3+1x^3 + 1x3+1
(D)2x3+12x^3 + 12x3+1
Copyright ©