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  • 2010 December(69A) Math Question 17

    Quadratic Equations

    - FOIL

    Choice D
    $$=5c(2d-5c)-3d(2d-5c)$$ $$=10cd-36c^{2}-6d^{2}+15cd$$ $$=25cd-36c^{2}-6d^{2}$$

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