Quadratic Simultaneous Equations

Question 1:

y=x23x5 y=2x+8
x=6.89 or -1.89 y=21.78 or 4.22

Question 2:

y=2x214x+10 y=x+7
x=7.29 or 0.206 y=14.29 or 7.206

Question 3:

y=2x2+8x6 y=x1
x=0.608 or -4.11 y=-0.392 or -5.11

Question 4:

y=x2+13x5 y=x7
x=-0.169 or -11.8 y=-7.169 or -18.8

Question 5:

y=3x213x5 y=3x+3
x=5.79 or -0.46 y=20.37 or 1.62

Question 6:

y=2x27x+3 y=3x+4
x=5.1 or -0.0981 y=19.3 or 3.7057