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  • 3-m 2m-4÷(m+2-5 m-2);

    3-m 2m-4÷(m+2-5 m-2);
    3-m/2m-4÷(m+2-5/m-2);
    /是分?jǐn)?shù)線,
    數(shù)學(xué)人氣:832 ℃時(shí)間:2020-07-11 08:03:34
    優(yōu)質(zhì)解答
    (3-m)/(2m-4)÷[m+2-5/(m-2)] =(3-m)/(2m-4)÷[(m^2-4-5)/(m-2)] =(3-m)/(2m-4)÷[(m^2-9)/(m-2)] =(3-m)/(2m-4)÷[(m-3)(m+3)/(m-2)] =(3-m)/(2m-4)*(m-2)/(m-3)(m+3) =-(m-3)/2(m-2)*(m-2)/(m-3)(...
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