## Prealgebra (7th Edition)

$3z^4+5z^3+6z^2+3z+1$
Combine like terms and multiply each term by each other. Don't let all those zzzz's put you to sleep! $3z^2z^2+3z^2z+3z^2*1+(2zz^2+2zz+2z*1)+(1z^2+1z+1*1)$ Combine like terms. $3z^4+3z^3+3z^2+2z^3+2z^2+2z+z^2+z+1$ Simplify. Arrange the expression so that the exponents decline, with the z^4 first and then z^3, etc. Remember exponent rules. $3z^4+5z^3+6z^2+3z+1$