Solving quadratic equations (to 2 d.p.)

1)2x2+6x+3=0
x=0.63or2.37
2)x2+5x+1=0
x=0.21orx=4.79
3)5x27x+1=0
x=1.24orx=0.16
4)2x2+6x1=0
x=0.16orx=3.16
5)8x212x3=0
x=1.72orx=0.22
6)2x27x5=0
x=4.11orx=0.61
7)3x25x+1=0
x=1.85orx=0.18
8)5x29x+3=0
x=2.09orx=0.29