#for_loopy.py

b,c=2,-1

for a in np.arange(-1,2,0.3):

x1=(-b+np.sqrt(b**2-4*a*c))/(2*a)

x2=(-b-np.sqrt(b**2-4*a*c))/(2*a)

print("a={:.4f},x1={:.4f},x2={:.4f}".format(a,x1,x2))

Modify the code so that rather than printing the command line, the values are stored in an array.