因式分解 X8 + X7 +1
2005-10-10 18:46:59 · 1 個解答 · 發問者 Frank 7 in 科學 ➔ 數學
X^8 + X^7 +1
=( X^8+ X^7+X^6)-(X^6+X^5+X^4)+(X^5+X^4+X^3)-(X^3+X^2+X)+(X^2+X+1)
=(x^2+x+1)(X^6 - X^4 +X^3-X + 1)
2005-10-10 20:18:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋