Mathematics

8th

grade

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S2 Ch2 恆等式 Final Test

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10 questions

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  • 1. Multiple Choice
    1 minute
    1 pt

    展開 (x-3y)(x+2y)。

    x2-5xy +6y2

    x2+xy -6y2

    x2-xy -6y2

    x2-xy +6y2

  • 2. Multiple Choice
    1 minute
    1 pt

    展開 (4x-y)(x-4y)。

    4x2-16xy -4y2

    4x2-17xy +4y2

    4x2-15xy +y2

    x2-16xy +4y2

  • 3. Multiple Choice
    2 minutes
    1 pt

    展開 2 (3x-y)(x-5y)。

    3x2-16xy +5y2

    3x2-14xy +5y2

    6x2-32xy +10y2

    6x2-28xy -10y2

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