帮个忙计算···(x+2)*(x²+4)*(x-2)
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帮个忙计算···(x+2)*(x²+4)*(x-2)
帮个忙计算···
(x+2)*(x²+4)*(x-2)
帮个忙计算···(x+2)*(x²+4)*(x-2)
(x+2)*(x²+4)*(x-2)
=(x²+4)*(x-2)(x+2)
=(x²+4)*(x²-4)
=x^4-16
(x+2)*(x²+4)*(x-2)
=(x²-4)*(x²+4)
=x^4-16
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