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13 January, 17:44

If 9y^2-21y+8 is written as p^2-7p+8 what is p in terms of y

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  1. 13 January, 17:52
    0
    p = 3y

    Step-by-step explanation:

    Compare like terms in both expressions, that is

    - 7p = - 21y (divide both sides by - 7)

    p = 3y

    and as a check

    p² = (3y) ² = 9y²
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