What is the cube root of 216x^9 y^18

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years