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22 June, 20:14

Find Dxy using the rules for finding derivatives.

= (5x^2-8) (9x^2-3x+5)

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  1. 22 June, 23:30
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    You can do foil method first, to make it easier and to avoid product rule,

    y = 45x^4 - 15x³ + 25x² - 72x² + 24x - 40

    Simplify like terms,

    y = 45x^4 - 15x³ - 47x² + 24x - 40

    Now, find derivative,

    dy/dx = 180x³ - 45x² - 94x + 24
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