Respuesta :

celierfitzwater

Answer:

x= -3 , -7

Step-by-step explanation:

mumsy

Answer:

Step-by-step explanation:

4x^2+40x+84=0

i divide first by 4 the whole equation

x^2+10x+21=0

we use the quadratic formula to solve it

and you will get x=-3, and -7

from least to greatest

-7 ,-3