Question

Find the exact value of the radical expression in simplest form.
the square root of p to the sixth power + the square root of 9 times p to the sixth power + 3 the square root of p to the sixth power − the square root of p squared

13 times p cubed times the square root of p − 2 times p times the square root of p

13 times p cubed times the square root of p − 2p

7p3

7p3 − p