(x^2+8x+7)(x^2+8x+15)+1
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(x^2+8x+7)(x^2+8x+15)+1(x^2+8x+7)(x^2+8x+15)+1(x^2+8x+7)(x^2+8x+15)+1原式=(x+1)(x+7)(x+3)(x+5)+1如果本题有什
(x^2+8x+7)(x^2+8x+15)+1
(x^2+8x+7)(x^2+8x+15)+1
(x^2+8x+7)(x^2+8x+15)+1
原式=(x+1)(x+7)(x+3)(x+5)+1
如果本题有什么不明白可以追问,
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