Answer:
Step-by-step explanation:
[tex]\displaystyle\\6^{12}*6^8=\\6^{12+8}=\\6^{20}.\\\\8^{14}\div8^{12}=\\8^{14-12}=\\8^2=64.\\\\b*b^5*b^2=\\b^1*b^5*b^2=\\b^{1+5+2}=b^8.\\\\5c^4d*4c^3d=\\5c^4d^1*4c^3d^1=\\5*4*c^{4+3}*d^{1+1}=\\20c^7d^2.[/tex]
