Consider the term $9x^8$9x8.
What is the coefficient of $9x^8$9x8?
What is the exponent?
Consider the expression $5y^3$5y3.
Consider the expression $-2a^3$−2a3.
Consider the expression $-5y^9-y$−5y9−y.
Extend the knowledge of arithmetic operations and apply to polynomials.
Add, subtract, and/or multiply polynomial expressions (express answers in simplest form). Note: Nothing larger than a binomial multiplied by a trinomial.