计算题四道①(2ax)^2·(-3/4a^4x^3y^3)÷(-1/2a^5xy^2)②(21a^3-14a^2+7a)÷7a③(24m^3n-16m^2n^2+mn^3)÷(-8m)④(36x^6-24x^4+12x^3)÷12x^2
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![计算题四道①(2ax)^2·(-3/4a^4x^3y^3)÷(-1/2a^5xy^2)②(21a^3-14a^2+7a)÷7a③(24m^3n-16m^2n^2+mn^3)÷(-8m)④(36x^6-24x^4+12x^3)÷12x^2](/uploads/image/z/1959730-34-0.jpg?t=%E8%AE%A1%E7%AE%97%E9%A2%98%E5%9B%9B%E9%81%93%E2%91%A0%EF%BC%882ax%EF%BC%89%5E2%C2%B7%EF%BC%88-3%2F4a%5E4x%5E3y%5E3%EF%BC%89%C3%B7%EF%BC%88-1%2F2a%5E5xy%5E2%EF%BC%89%E2%91%A1%2821a%5E3-14a%5E2%2B7a%29%C3%B77a%E2%91%A2%EF%BC%8824m%5E3n-16m%5E2n%5E2%2Bmn%5E3%EF%BC%89%C3%B7%28-8m%29%E2%91%A3%2836x%5E6-24x%5E4%2B12x%5E3%29%C3%B712x%5E2)
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