(2x-3y)2-(2x-3y)-72
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Answer:
-8x18y-72
Step-by-step explanation:
(2x-3y)2-(2x-3y)-72
(4x-6y)-(2x-3y)-72
(4x-6y)(-2x+3y)-72
(-8x-18y)-72
-8x-18y-72
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