F.2 Maths

2008-01-31 7:57 am

1.5y^2-6y+1

2.7p^2+20p-3

3.3x^2+14x+15

4.6y^2-7y-5

5.14b^2+39b+10

更新1:

因式分解

回答 (3)

2008-01-31 8:21 am

✔ 最佳答案

1. = (5y-1)(y-1)
2. = (7p-1)(p+3)
3. = (3x+5)(x+3)
4. = (3y-5)(2y+1)
5. = (2b+5)(7b+2)

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2008-02-03 6:47 am

1. 5y^2-6y+1
=(5y-1)(y-1)

2. 7p^2+20p-3
=(7p-1)(p+3)

3. 3x^2+14x+15
=(3x+5)(x+3)

4. 6y^2-7y-5
=(3x-5)(2x+1)

5. 14b^2+39b+10
=(7x+2)(2x+5)

參考: me

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2008-01-31 3:36 pm

1 (5y-1)(y-1)
2 (7p-1)(p+3)
3 (3x+5)(x+3)
4 (3y-5)(2y+1)
5 (2b+5)(7b+2)

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