Respostas

  • Usuário do Brainly
2014-07-09T14:32:45-03:00
A)
20xy-15xz+5x= 5x(4y-3z+1) fator comum
b)
15³-10x²=5x²(3x-2)
c)
5x²-7x=x(5x-7)