Factor 9z + 18 usually GCF

Answer 1

To factor the expression \( 9z + 18 \) using the greatest common factor (GCF), first identify the GCF of the terms in the expression.

The terms are:

• \( 9z \)
• \( 18 \)

The GCF of \( 9 \) and \( 18 \) is \( 9 \).

Now, factor out the GCF from the expression:

\[ 9z + 18 = 9(z + 2) \]

So, the factored form of \( 9z + 18 \) is:

\[ 9(z + 2) \]