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30 August, 04:01

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

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  1. 30 August, 05:41
    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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