Write in simplest form

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x.which term can she add to the polynomial that would not change its grestest common factor? check all that apply

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents