Question

3m²-21m-6=0 by completing the square

Answer 1

Answer:

3(m^2-7m-6) =0

m^2-7m-6=0

m^2-6m+m-6=0

m(m-6) +1(m-6) =0

(m-6) (m+1) =0

m-6=0 m+1=0

m=6 m=-1