Multiple Choice

A solar energy technician is expanding the expression for the area of a square solar collector, (2x−3y)2(2x - 3y)^2, using the Binomial Squares Pattern (a−b)2=a2−2ab+b2(a - b)^2 = a^2 - 2ab + b^2. According to the pattern, why is the middle term of the resulting trinomial (−12xy-12xy) negative?

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Updated 2026-09-17

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