1) (-x^3)^5 (x^5 x^6)^4 = (-1)^5 x^15 (x^11)^4 = -x^15 * x^44 = -x^59
2) (x^4)^3 x^2 / x^9 = x^12 x^2 / x^9 = x^14 / x^9 = x^5
1) (-x^3)^5 (x^5 x^6)^4 = (-1)^5 x^15 (x^11)^4 = -x^15 * x^44 = -x^59
2) (x^4)^3 x^2 / x^9 = x^12 x^2 / x^9 = x^14 / x^9 = x^5