Doar subpunctele a,b,c ofer coronița

a)x1=2
x2=3
S=x1+x2=2+3=5
P=x1•x2=2•3=6
b)x1=-2
x2=-4
S=x1+x2=-2-4=-6
P=x1•x2=-2•(-4)=8
x²-(-6)x+8=0
c)x1=4
x2=-3
S=x1+x2=4-3=1
P=x1•x2=4•(-3)=-12