Question

factor the expression completely. -72x² - 45x

Explanation:

Step1: Identify greatest common factor

Find GCF of $-72x^2$ and $-45x$. The GCF is $-9x$.

Step2: Factor out the GCF

Divide each term by $-9x$ and write as product.
$-72x^2 - 45x = -9x(8x + 5)$

Answer:

$-9x(8x + 5)$