(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)
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(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(
(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)
(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)
(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)
(3xy)^2÷(-xy)+(x-2y)^2-(x+2y)(x-2y)
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