## Algebra: A Combined Approach (4th Edition)

$20(x-5)(x-6)$
Step 1: $20x^{2}-220x+600$ Step 2: We factor out the common factor of $20$ from the polynomial: $20(x^{2}-11x+30)$. Step 3: Next, we factor the polynomial by grouping: $20(x^{2}-5x-6x+30)$. Step 4: $20(x(x-5)-6(x-5))$ Step 5: $20(x-5)(x-6)$
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