-------------------------------------------|||||||||||||||||||||||||||||||||||||||||||||||||||||-------------------------------------------3x² - 8x + 4的因式分解是什麼?-------------------------------------------||||||||||||||||||||||||||||||||||||||||||||||||||||||-------------------------------------------
2006-01-18 16:22:56 · 4 個解答 · 發問者 changchih 7 in 科學 ➔ 數學
(3x-2)*(x-2)
(3x-2)*(x-2)
(3x-2)*(x-2)
(3x-2)*(x-2)
(3x-2)*(x-2)
(3x-2)*(x-2)
2006-01-18 16:26:15 · answer #1 · answered by 小老鼠 7 · 0⤊ 0⤋
好像是等級愈低ㄉ.
回答愈容易懂
2006-01-19 04:26:30 · answer #2 · answered by 事後諸葛 4 · 0⤊ 0⤋
用十字交乘法
３x -2
x- 2
-----------
-2x-6x=-8x
可得到3x^2-8x+4=(3x-2)(x-2)
2006-01-18 17:26:53 · answer #3 · answered by ? 3 · 0⤊ 0⤋
用逆推的~
先算出 X=2 或 X=2/3 時為零...
就可以知道 (3x-2)*(x-2)=0
也就是因式分解!!!
2006-01-18 16:34:49 · answer #4 · answered by 知識 molecule 4 · 0⤊ 0⤋