Fill in the Blank

An apprentice welder is fabricating a rectangular steel support bracket for a commercial construction project. The blueprint specifies the dimensions of the bracket as (3x−y)(3x - y) inches by (3x+y)(3x + y) inches. To quickly determine the total surface area of the bracket, the welder recalls the Product of Conjugates pattern: (a−b)(a+b)=a2−b2(a - b)(a + b) = a^2 - b^2. Using this pattern, the simplified expression for the area of the steel bracket is ____ square inches. (Write your answer in simplified form, such a

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Updated 2026-09-18

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