is w −3 +1 a polynomail

Answer 1

it's Not a "polynomail" It's a polynomial

any expression with terms all with integer exponents is a polynomial

w has an implicit exponent of 1

3w and 1w have implicit exponents of 0

0 and 1 are integers

w^1 -3w^0 + 1w^0 = w -3 +1

A poly-no-mail must be when you check for mail and there is No Mail, multiple times