Question

计算1/4（a-b）^2（b-a）^3×（-a-b）^5×（2a+2b）^4

Answer 1

1/4（a-b）^2（b-a）^3×（-a-b）^5×（2a+2b）^4

=1/4（a-b）^2（a-b）^3×（a+b）^5×（a+b）^4 *16

=4（a-b）^5 * (a+b）^9