To expand the expression \(-56(9b - 12)\), you apply the distributive property. This means you need to multiply \(-56\) by each term inside the parentheses:
\[ -56(9b) - 56(-12) \]
Now, calculating each term:
- \(-56 \cdot 9b = -504b\)
- \(-56 \cdot -12 = 672\)
Therefore, the expanded expression is:
\[ -504b + 672 \]
So, the completed expression is:
\(-504b + 672\)
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