$p(x)=(3x^4-8x^3+15x-40)(3x-8)^2$ Find all the real number roots of $p$ and answer the following questions. **How many distinct, real number roots does $p$ have ?** [[☃ math-keypad 1]] **What is the largest real root of $p\ $?** *Give your answer using exact terms.* [[☃ expression 1]]