Quadratic Simultaneous Equations

Question 1:

y=2x29x2 y=3x9
x=5.35 or 0.655 y=7.05 or -7.035

Question 2:

y=3x23x10 y=2x9
x=1.85 or -0.18 y=-5.3 or -9.36

Question 3:

y=x22x+2 y=x+7
x=4.19 or -1.19 y=11.19 or 5.81

Question 4:

y=2x28x+4 y=2x6
x=3.62 or 1.38 y=1.24 or -3.24

Question 5:

y=x2+15x6 y=2x2
x=0.301 or -13.3 y=-1.398 or -28.6

Question 6:

y=3x2+13x6 y=3x+3
x=0.737 or -4.07 y=5.211 or -9.21