melissarene652
melissarene652 melissarene652
  • 14-01-2021
  • Mathematics
contestada

(r - 3)(3r + 6)= ? .....

Respuesta :

joann335 joann335
  • 14-01-2021
r(3r+6)-3(3r+6)
3r² +6r-9r-18
3r²-3r-18
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