Question

Plss help me with this

Answer 1

`Use:\\a* b=b\cdot a\\\\a^n* a^m=a^(n+m)\\-----------------------\\1^o\ -5x^5*\left(-(1)/(5)x^2\right)=\left[-5*\left(-(1)/(5)\right)\right]* (x^5* x^2)=\boxed{1x^7=x^7}\\\\2^o\ 2ab^2*\left(-(1)/(2)a^2b\right)=\left[2*\left(-(1)/(2)\right)\right]*(ab^2* a^2b)=\boxed{-1a^3b^3=-a^3b^3}`


`3^o\ (3)/(5)xy^2*\left(-(5)/(3)x^2y^3\right)=\left[(3)/(5)*\left(-(5)/(3)\right)\right]*(xy^2* x^2y^3)=\boxed{-x^3y^5}\\\\4^o\ xy*(-2x^2y)=[1*(-2)]*(xy* x^2y)=\boxed{-2x^3y^2}`