Which expressions are polynomials? Select the two correct answers. x4+2y2+z−w2

x−3+x√

x−3−x+1

−4x8

Someone help on this question I also need the answer to it

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.