We start with the polynomial expression:
\[
-4 w^{2} + 36 w - 72
\]
Step 2: Factor Out the Greatest Common Factor
Identify the greatest common factor (GCF) of the coefficients \(-4\), \(36\), and \(-72\). The GCF is \(-4\). We factor this out:
\[
-4 \left( w^{2} - 9w + 18 \right)
\]
Step 3: Factor the Quadratic Expression
Next, we need to factor the quadratic expression \(w^{2} - 9w + 18\). We look for two numbers that multiply to \(18\) (the constant term) and add to \(-9\) (the coefficient of \(w\)). The numbers \(-6\) and \(-3\) satisfy these conditions. Thus, we can factor the quadratic as:
\[
-4 \left( w - 6 \right) \left( w - 3 \right)
\]
Step 4: Write the Fully Factorized Form
The fully factorized form of the original polynomial is:
\[
-4 \left( w - 6 \right) \left( w - 3 \right)
\]