（3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2

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（3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2
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（3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2
（3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2

（3x^2-2y^2)^4x(2/3y^2-x^2)^2 ,其中3x^2-2y^2=2
（3x^2-2y^2)^4x(2/3y^2-x^2)^2
=(3x^2-2y^2)^4x(2y^2-3x^2)^2/3^2
=(3x^2-2y^2)^6/3^2
=2^6/3^2
=64/9

原式=（3x*2-2y*2）*4 x（-1/3）*2（3x*2-2y*2）*2=（-1/3）*2（3x*2-2y*2）*6=1/9 x2*6=64/9

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