$$(\frac{x^{a+b}}{x^{c}})^{a-b}\times(\frac{x^{b+i}}{x^{a}})^{b-i}\times(-\frac{x^{i+b}}{x^{b}})^{c-a}$$
$\left(-x^{i}\right)^{c-a}\left(x^{a+b-c}\right)^{a-b}\left(x^{b-a+i}\right)^{b-i}$
