欧赔思维:(x+1)(x-1)(xx+10(xx+1)
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初一数学题
(x+1)(x-1)(xx+1)(xx+1)
=(xx-1)(xx+1)(xx+1)
=(x^4-1)(x^2+1)
=x^6+x^4-x^2-1
(x+1)(x-1)(xx+1)(xx+1)
=(xx-1)(xx+1)(xx+1)
=(x^4-1)(x^2+1)
=x^6+x^4-x^2-1