polynomial means more than 1 term when all like terms are combined
terms are seperated by plus or minus symbols
you can't combine placeholders and numbers
y is 1 term, not poly
4x^3+y is 2 term, poly
2+s is 2 term, poly
answer is 4x^3+y and 2+s
cubic means highest power of the placeholder is 3
quadratic means highest power of placeholder is 2
trinomial means 3 terms
yep, 3 terms
4x^2+3x+5
highest power is 2
quadratic trinomial