3題數學題 因式分解 送5分 幫幫手 盡快要有答案

2010-12-04 1:46 am
1)t^2-3t-18

2)m^2-16x-12

3)3x^2-16x-12

回答 (4)

2010-12-04 6:01 am
✔ 最佳答案
1)
t^2-3t-18
= (t-6)(t+3)

2)
m^2-16x-12
==>抄錯題目

3)
3x^2-16x-12
= (3x-2)(x+6)

2010-12-06 02:25:56 補充:
2)
m^2-12m+27
= (m-3)(m-9)
參考: girl
2010-12-12 7:49 pm
1) t^2-3t-18

圖片參考:http://imgcld.yimg.com/8/n/HA07079551/o/701012030087713873419980.jpg

∴(t-6)(t+3)

2)m^2-12m+27



圖片參考:http://imgcld.yimg.com/8/n/HA07079551/o/701012030087713873419991.jpg

∴(m-9)(m-3)

3)3x^2-16x-12


圖片參考:http://imgcld.yimg.com/8/n/HA07079551/o/701012030087713873419992.jpg

∴(3x+2)(x-6)

2010-12-12 11:50:36 補充:
∴ 之後果D係答案!
2010-12-04 11:32 pm
1
t^2-3t-18
= (t-6)(t+3)

2
m^2-16m-12
=(m-8)^2-76

3
3x^2-16x-12
= (3x+2)(x-6)
2010-12-04 1:50 am
1)t^2-3t-18
= (t-6)(t+3)

2)m^2-16x-12
冇解

3)3x^2-16x-12
= (3x+2)(x-6)


收錄日期: 2021-04-16 14:31:43
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