91Ó°ÊÓ

A box has 10 items, and you select 3 of them. What is the value of \(P-C\) if \(P\) represents the number of permutations possible when selecting 3 of the items, and \(C\) is the number of combinations possible when selecting 3 of the items?

Write each polynomial in standard form. Then classify it by degree and by number of terms. $$ -3 x^{2}+6-x^{3} $$

Write each function in vertex form. $$ y=x^{2}+7 x-1 $$