Huynhthanh
Huynhthanh
22-07-2021
Mathematics
contestada
x.(9x-1).(x+2)-x(3x-1).(3x+1)
Respuesta :
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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