1) x^2 -3x+2=0
D= b^2-4ac= (-3)^2 - 4•1•2=9-8=1
x1=0
x2=6
2) x^2-2x+1=0
x=1
3) x^2-4x+4=0
x=2
4)x^2-27x=0
x2=27
1) x^2 -3x+2=0
D= b^2-4ac= (-3)^2 - 4•1•2=9-8=1
x1=0
x2=6
2) x^2-2x+1=0
x=1
3) x^2-4x+4=0
x=2
4)x^2-27x=0
x1=0
x2=27