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? asked in Science & MathematicsMathematics · 1 decade ago

one question. please help?

how do u factorise

(a - 1)z - (a - 1)y

2 Answers

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  • misha
    1 decade ago
    Favorite Answer

    Both terms have the same element that is (a-1)

    Thus, you take it a-1 out of the equation, you have z -y left

    Since you can't change the question,

    it becomes = (a-1)(z-y).. voila!

  • ?
    Lv 6
    1 decade ago

    (a - 1)z - (a - 1)y = (a - 1) (z - y)

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