數學(因式分解)

2008-11-05 2:53 am
6(x-2y)+3(2y-x)
要列步驟

回答 (5)

2008-11-05 4:49 am
✔ 最佳答案
6(x-2y)+3(2y-x)

= 6(x)+6(-2y)+3(2y)+3(-x) ----->(首先利用彩虹乘法)

= 6x-12y+6y-3x

= (6-3)x+(-12+6)y -------------->(然後同類項相加或相減)

= 3x-6y ------------->(最後因式分解)

= 3(x-2y)

所以最後答案是3(x-2y) .
參考: me
2008-11-05 5:58 am
6(x-2y)+3(2y-x)
=6(x-2y)-3(x-2y)............a-b=-(-a+b)=-(b-a)
=(x-2y)(6-3)
=3(x-2y)
參考: 會考數學拿c既人~
2008-11-05 4:03 am
步驟 :

6(x-2y)+3(2y-x)

= 6x-6*2y+3*2y-3x

= 6x-3x-(6-3)*2y

= 3x-3*2y

= 3*x-3*2y

= 3*(x-2y)

所以答案是3*(x-2y) .
參考: 我自己 ^3^
2008-11-05 3:11 am
6(x-2y)+3(2y-x)
=6(x-2y)-3(x-2y)
=(6-3)(x-2y)
參考: mE
2008-11-05 3:02 am
= 6x-12y+6y-3x
= 3x-6y
= 3(x-2y)
參考: 我


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