9. What is the greatest common factor in the expression 2Bxyz + 10x297 a. By b 4xyz 10 Factor 3mm - 4) - m - 4) am-4) (m + 1 (3-1) (-4) cm - 443m - 1) d. 3m (m1-4 11. Fador 711-5)+(5-0) a (15)( 73) b.14.5) (71-3) oft-5) [71-3) 12 Facor 4m + 7mn - 2n a 21-n (2 b 4m + n) [m - 2n) C. (4m - n) (m + 2n) d. 14 - 2n) im )