1.5ab-4a^2b^2-ab^2-4a^2b^2-7ab^2+3ab 合并同类项 2.-x^3y-1/2x^3y-xy^3-1/2x^3y+2x^3y-5/3xy^3都要合并同类项
问题描述:
1.5ab-4a^2b^2-ab^2-4a^2b^2-7ab^2+3ab 合并同类项 2.-x^3y-1/2x^3y-xy^3-1/2x^3y+2x^3y-5/3xy^3
都要合并同类项
答