maceycrowe2001pe4mqh maceycrowe2001pe4mqh 22-02-2019 Mathematics contestada Factor the expression r^2+19rs+90s^2 A:(r+3s) (r+30s) B:(r+3) (r+30s^2) C: (r+10s) (r+9s) D:(r+10)(r+9s^2)
