## Algebra and Trigonometry 10th Edition

$3z(z^{2}-2z+3)$
Original Expression : $3z^{3}-6z^{2}+9z$ Identify the common factor of all the terms in the expression and use it to factor the expression. Common factor = 3z Hence, $3z^{3}-6z^{2}+9z$ = $3z(z^{2}-2z+3)$