Question

2(a-2b)^2-7(a-2b)^3+3(2b-a)^2+(2b-a)^3合并同类项

Answer 1

2(a-2b)^2-7(a-2b)^3+3(2b-a)^2+(2b-a)^3

=2(a-2b)^2+3(a-2b)^2 -7(a-2b)^3 -(a-2b)^3

=5(a-2b)²-8(a-2b)³