Question

x-y的立方乘以y-x的4次方乘以-x+y的立方等于多少

Answer 1

(x-y)^3(y-x)^4(-x+y)^3

=-(y-x)^3(y-x)^4(y-x)^3

=-(y-x)^(3+4+3)

=-(y-x)^10