[(3x +2y)(3x-2y)-(x+2y)(5x-2y)]÷(4x)要步骤

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[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷(4x)要步骤[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷(4x)要步骤[(3x+2y)(3x-2y)-(x+2y)(5

[(3x +2y)(3x-2y)-(x+2y)(5x-2y)]÷(4x)要步骤
[(3x +2y)(3x-2y)-(x+2y)(5x-2y)]÷(4x)要步骤

[(3x +2y)(3x-2y)-(x+2y)(5x-2y)]÷(4x)要步骤
(9x^2-4y^2-5x^2+4y^2-8xy)/(4x)=(4x^2-8xy)/(4x)=x-2y

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