升冪降冪!!!

2008-01-02 12:24 am
按升冪排列下列多項式 ( )=次方
1. x(2)-x-x(3)
2. 2x(4)+3x-x(2)
3. x(5)-8+4x(3)
4. -3+x(10)-x(3)
5. 2x+3x(3)-5x(2)+6

按降冪排列下列多項式
1. -3a(2)-6a(4)+3+7a
2. 2x(40+3x+x(2)
3. x(5)-8+4x(3)
4. -3+x(10)-x(3)
5. 2x+3x(3)-5x(2)+6

回答 (2)

2008-01-02 2:56 am

圖片參考:http://hk.yimg.com/i/icon/16/67.gif

按升冪排列下列多項式 ( )=次方
1. x(2)-x-x(3) = -x + x^2 - x^3
2. 2x^4 + 3x - x^2 = 3x - x^2 + 2x^4
3. x^5 - 8 + 4x^3 = -8 + 4x^3 + x^5
4. -3 + x^10 - x^3 = -3 - x^3 + x^10
5. 2x + 3x^3 - 5x^2 + 6 = 6 + 2x - 5x^2 + 3x^3

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按降冪排列下列多項式
1. -3a^2 - 6a^4 + 3 + 7a = -6a^4 - 3a^2 + 7a + 3
2. 2x^4 + 3x + x^2 = 2x^4 + x^2 + 3x
3. x^5 - 8 + 4x^3 = x^5 + 4x^3 - 8
4. -3 + x^10 - x^3 = x^10 - x^3 - 3
5. 2x + 3x^3 - 5x^2 + 6 = 3x^3 - 5x^2 + 2x + 6
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參考: 我的數學知識
2008-01-02 12:36 am
1. x^2 - x - x^3 = -x + x^2 - x^3
2. 2x^4 + 3x - x^2 = 3x - x^2 + 2x^4
3. x^5 - 8 + 4x^3 = -8 + 4x^3 + x^5
4. -3 + x^10 - x^3 = -3 - x^3 + x^10
5. 2x + 3x^3 - 5x^2 + 6 = 6 + 2x - 5x^2 + 3x^3

按降冪排列下列多項式
1. -3a^2 - 6a^4 + 3 + 7a = -6a^4 - 3a^2 + 7a + 3
2. 2x^4 + 3x + x^2 = 2x^4 + x^2 + 3x
3. x^5 - 8 + 4x^3 = x^5 + 4x^3 - 8
4. -3 + x^10 - x^3 = x^10 - x^3 - 3
5. 2x + 3x^3 - 5x^2 + 6 = 3x^3 - 5x^2 + 2x + 6

2008-01-01 16:37:13 補充:
慢左, 做得幾清楚, 投我一票, 唔該


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