Respuesta :

Answer:

x= 7   &  4

Step-by-step explanation:

x^2 +3x -7 =0

x(x+3) = 7

x=7       or    x+3=7

                    x= 4

Step-by-step explanation:using quadratic formula a=1,b=3,c=-7 then we substitute the variables into it .Answer will be equals to 0.68 or -3.6