(x+3y)(x^2+9y^2)(x-3y)帮帮忙,我很急,请在今天给我答复,O(∩_∩)O谢谢
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![(x+3y)(x^2+9y^2)(x-3y)帮帮忙,我很急,请在今天给我答复,O(∩_∩)O谢谢](/uploads/image/z/958938-42-8.jpg?t=%28x%2B3y%29%28x%5E2%2B9y%5E2%29%28x-3y%29%E5%B8%AE%E5%B8%AE%E5%BF%99%2C%E6%88%91%E5%BE%88%E6%80%A5%2C%E8%AF%B7%E5%9C%A8%E4%BB%8A%E5%A4%A9%E7%BB%99%E6%88%91%E7%AD%94%E5%A4%8D%2CO%28%E2%88%A9_%E2%88%A9%29O%E8%B0%A2%E8%B0%A2)
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(x+3y)(x^2+9y^2)(x-3y)帮帮忙,我很急,请在今天给我答复,O(∩_∩)O谢谢
(x+3y)(x^2+9y^2)(x-3y)
帮帮忙,我很急,请在今天给我答复,O(∩_∩)O谢谢
(x+3y)(x^2+9y^2)(x-3y)帮帮忙,我很急,请在今天给我答复,O(∩_∩)O谢谢
=(x+3y)(x-3y)(x^2+9y^2)
=(x^2-9y^2)(x^2+9y^2)
=x^4-81y^4
(x+3y)(x^2+9y^2)(x-3y)
=(x+3y)(x-3y)(x^2+9y^2)
=(x^2-9y^2)(x^2+9y^2)
=x^4-81y^4
x(x-y)2-(y-x)3
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