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factor 9z plus 18 using gfc

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Answered by GPT-4o mini
To factor the expression \( 9z + 18 \) using the greatest common factor (GCF), we first identify the GCF of the terms in the expression.

1. **Identify the coefficients**: The coefficients are 9 and 18.
2. **Find the GCF**: The GCF of 9 and 18 is 9.
3. **Factor out the GCF**: We factor out 9 from each term.

So, we can rewrite the expression as:

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

Thus, the factored form of \( 9z + 18 \) is \( 9(z + 2) \).

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