The total cost c a painter charges to paint a house depends on the number h of hours it takes to paint the house. This situation
1 answer:
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Answer:
The product is the difference of squares is
Step-by-step explanation:
Explanation
- The given expression is (x y-9)(x y+9).
- We have to multiply the given expression.
- Square the first term xy. Square the last term 9 .