Huynhthanh Huynhthanh
  • 22-07-2021
  • Mathematics
contestada

x.(9x-1).(x+2)-x(3x-1).(3x+1)

Respuesta :

nguyenquangloc382004
nguyenquangloc382004 nguyenquangloc382004
  • 22-07-2021

Answer:

=17x²-x

Step-by-step explanation:

=x.(9x²+18x-x-2)-x.(9x²-1)

=x.(9x²+17x-2-9x²+1)

=x.(17x-1)

=17x²-x

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