(3x+2y)\(2x-y)=3\5且(xy=\0)求(3x^2+2y^2)\(2x^2-y^2)的值

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(3x+2y)\(2x-y)=3\5且(xy=\0)求(3x^2+2y^2)\(2x^2-y^2)的值(3x+2y)\(2x-y)=3\5且(xy=\0)求(3x^2+2y^2)\(2x^2-y^2)

(3x+2y)\(2x-y)=3\5且(xy=\0)求(3x^2+2y^2)\(2x^2-y^2)的值
(3x+2y)\(2x-y)=3\5且(xy=\0)求(3x^2+2y^2)\(2x^2-y^2)的值

(3x+2y)\(2x-y)=3\5且(xy=\0)求(3x^2+2y^2)\(2x^2-y^2)的值
(3x+2y)\(2x-y)=3\5
5(3x+2y)=3(2x-y)
15x+10y=6x-3y
9x=-13y
x/y=-13/9
(3x^2+2y^2)\(2x^2-y^2)
=(3(x/y)^2+2)/(2(x/y)^2-1)
=(3*(-13/9)^2+2)/(2*(-13/9)^2-1)
=(3*169+2*81)/(2*169-81)
=669/257