计算题四道

问题描述:

计算题四道
①(2ax)^2·(-3/4a^4x^3y^3)÷(-1/2a^5xy^2)
②(21a^3-14a^2+7a)÷7a
③(24m^3n-16m^2n^2+mn^3)÷(-8m)
④(36x^6-24x^4+12x^3)÷12x^2

①(2ax)^2·(-3/4a^4x^3y^3)÷(-1/2a^5xy^2)=(-3a^6x^5y^3)÷(-1/2a^5xy^2)=6ax^4y②(21a^3-14a^2+7a)÷7a=3a^2-2a+1③(24m^3n-16m^2n^2+mn^3)÷(-8m)=-3m^2n+2mn^2-1/8n^2④(36x^6-24x^4+12x^3)÷12x^2=...