伯賢 吳 發問時間: 科學數學 · 8 年前

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數學科B3複習卷

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因式分解下列各式:

2

(1)30x -85x+60=_____________

2

(2)21+14x-7x =______________

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(5)因式分解xy+2x-3y-6=_________________

(6)解方程式(3x-9)(3x+9)=0,x=__________________

2

(9)因式分解(3x-7) -(7-3x)=______________

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因式分解下列各式:

2

(1)x +12x+20=___________

2

(2)x +6x-7=_______________

2

(3)x -x-2=_______________

2

(4)x -7x+6=______________

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2

(12)若x +3x=ax+3x,則此方程式中x的解為x=_____________

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因式分解下列各式:

2

(1)x -(a-b)x-ab=___________

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2

(20)因式分解x -ax+bx-ab=__________________

1 個解答

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  • 最佳解答

    因式分解下列各式:

    (1)30x^2-85x+60=_____________

    5(2x-3)(3x-4)

    (2)21+14x-7x^2=______________

    7(x+1)(x-3)

    ---------------------------------------------

    (5)因式分解xy+2x-3y-6=_________________

    (x-3)(y+2)

    (6)解方程式(3x-9)(3x+9)=0,x=__________________

    3 或 -3

    (9)因式分解(3x-7)^2-(7-3x)=______________

    3(-3x+7)(-x+2)

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    因式分解下列各式:

    (1)x^2+12x+20=___________

    (x+2)(x+10)

    (2)x^2+6x-7=_______________

    (x-1)(x+7)

    (3)x^2-x-2=_______________

    (x+1)(x-2)

    (4)x^2-7x+6=______________

    (x-1)(x-6)

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    (12)若x^2+3x=ax+3x,則此方程式中x的解為x=_____________

    0 或 a

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    因式分解下列各式:

    (1)x^2-(a-b)x-ab=___________

    (x+b)(x-a)

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    (20)因式分解x^2-ax+bx-ab=__________________

    (x+b)(x-a)

    2013-01-28 23:29:22 補充:

    如果需要過程請再提出來喔! 我會補上過程!

    參考資料: 自己
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