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Mathematics

8th

grade

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2上 3-2 利用十字交乘法做因式分解

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  • 1. Multiple Choice
    1 minute
    1 pt
  • 2. Multiple Choice
    1 minute
    1 pt

    因式分解(x+2)(5x-12)+9x,可得下列哪一個結果?

    (x+3)(5x-8)

    (x+4)(5x-6)

    (x-6)(5x+4)

    (x-8)(5x+3)

  • 3. Multiple Choice
    1 minute
    1 pt

    x2pxq=(xa)(xb),若p<0,q>0,則下列何者正確?

    a>0、b<0

    a<0、b>0

    a>0、b>0

    a<0、b<0

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