来自马晓岩的问题
1）4a^2+4a-4a^2b+b+12）ax^2+16ay^2-a-8axy(3)a(a^2-a-1)+1(4)ab(m^2+n^2)+mn(a^2+b^2)
1）4a^2+4a-4a^2b+b+1
2）ax^2+16ay^2-a-8axy
(3)a(a^2-a-1)+1
(4)ab(m^2+n^2)+mn(a^2+b^2)
1回答
2020-06-30 16:57