Question

Спростiть вираз на фото

Answer 1

1) 20a^8 * (9a)^2 = 20a^8 * 81a^2 = 1620a^10
2) (-b^5)^4 * 12b^6 = b^20 * 12b^6 = 12b^26
3) (3m^6n^3)^4 * (-1/81m^9n) = 81m^24n^12 * (-1/81m^9n) = -m^33n^13