x1 * x2 =5 (-1 *-5)
x1+x2=-6 (-1 +(-5)
x1=-5
x2=-1
D=36-4*20=36-20=16
x=-6+-4/2
2:
x1 *x2=5 (1*5)
x1+x2=6 (1+5)
x1=5
x2=1
D=16
x=6+-4/2
x1 * x2 =5 (-1 *-5)
x1+x2=-6 (-1 +(-5)
x1=-5
x2=-1
D=36-4*20=36-20=16
x=-6+-4/2
x1=-5
x2=-1
2:
x1 *x2=5 (1*5)
x1+x2=6 (1+5)
x1=5
x2=1
D=16
x=6+-4/2
x1=5
x2=1