Question

750 помогите пожалуйста.

Answer 1

1)-12a^4bc^2d*5a^3d^4*(-3b^3cd^2)=180a^7b^4c^3d^7
2)49a^2bc^2*(-2/7ab)*1/14ac=-a^4b^2c^3
3)(-2/3a^4b^2c*15/2abc^3=-5a^5b^3c^4
4)(-4/3m^5n^3)*(-3/4mn^3)=m^6n^6

Answer 2

-12a⁴bc²d*5a³d⁴*(-3b³cd²)=180a^7b⁴c³d^7

49a²bc²*(2/7ab)*1/14ac=-a⁴b²c³

(-4/3m^5n³)(-3/4mn³)=m^6n^6