1. (8a ^ 4B ^ 3C) divide by (2a ^ 2B ^ 3) multiply by (- two thirds a ^ 3bC ^ 2) 1. (8a ^ 4B ^ 3C) divide by (2a ^ 2B ^ 3) multiply by (- two thirds a ^ 3bC ^ 2) 2. (3x ^ 2Y) ^ 2 multiply by (- 15xy ^ 3) divide by (- 9x ^ 4Y ^ 2)

1. (8a ^ 4B ^ 3C) divide by (2a ^ 2B ^ 3) multiply by (- two thirds a ^ 3bC ^ 2) 1. (8a ^ 4B ^ 3C) divide by (2a ^ 2B ^ 3) multiply by (- two thirds a ^ 3bC ^ 2) 2. (3x ^ 2Y) ^ 2 multiply by (- 15xy ^ 3) divide by (- 9x ^ 4Y ^ 2)

1、
Original formula = 4A ^ 2C × [(- 2 / 3) a ^ 2BC ^ 2]
=-(8/3)a^4bc^3
2、
Original formula = (9x ^ 4Y ^ 2) (- 15xy ^ 3) / (- 9x ^ 4Y ^ 2)
=(-135x^5y^5)÷(-9x^4y^2)
=15xy^3