Answer:
[tex]\large\boxed{6x^2(3x)=18x^3}[/tex]
Step-by-step explanation:
[tex]6x^2(3x)=(6\cdot3)(x^2x)\qquad\text{use}\ a^na^m=a^{n+m}\\\\=18x^{2+1}=18x^3[/tex]
