(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2等于什么
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(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2等于什么(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2等于什么(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^
(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2等于什么
(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2等于什么
(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2等于什么
(3x-2y)^2(3x+2y)^2(9x^2+4y^2)^2
=[(3x-2y)(3x+2y)]^2(9x^2+4y^2)^2
=(9x^2-4y^2)^2(9x^2+4y^2)^2
=[(9x^2-4y^2)(9x^2+4y^2)]^2
=(81x^4-16y^4)^2
=(81x^4-16y^4)^2
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