Respuesta :

Answer:

m=3   m=-4

Step-by-step explanation:

m^2+m-12=0

Factor

What two numbers multiply to -12  and add to 1

-3*4 = -12

-3+4 = 1

(m-3)  (m+4)=0

Using the zero product property

m-3=0  m+4=0

m=3   m=-4