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maths question help help?

Given that y=x^2 - 3x + 2, express the approximate change in x, in terms of p, when y changes from 6 to 6+p, where p is a small value.

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  • ?
    Lv 7
    10 years ago
    Favorite Answer

    [ f(6 + p) - f(6) ] / [ 6+p - 6 ]

    [ (6 + p)^2 - 3 * (6 + p) + 2 - ( 6^2 - 3 * 6 + 2 ) ] / [ p ]

    [ (36 + 12p + p^2) - 18 - 3p + 2 - 36 + 18 - 2 ) ] / [ p ]

    [ 12p + p^2 - 3p ] / [ p ]

    [ 9p + p^2 ] / [ p ]

    9 + p

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