Answer:
D is closest
Step-by-step explanation: Snap add?
1. f(x)*g(x)
[tex]\sqrt{x^{2}+12x+36}*x^{3}-12[/tex]
[tex](x^{2}+2\sqrt{3}x+6)*(x^{3}-12)[/tex]
[tex](x^{3}-12)(x^{2}+2\sqrt{3}x+6)[/tex]
[tex](x^{3}-12)(x^{2}+2\sqrt{3}x+6)\\\\x^5+2\sqrt{3}x^4+6x^3-12x^2-24\sqrt{3}x-72\\[/tex]
