Question

Умножьте одночлен на многочлен: 5a+2a(3m-2m^2+m^2+m^3)

Answer 1

 5a+2a(3m-2m^2+m^2+m^3) =5a+6am^2+2am^2+2am^3=5a+8am^2+2am^3