Quadratic Simultaneous Equations
Question 1:
y
=
2
x
2
−
4
x
−
6
y
=
2
x
+
8
x
=
4.54
or
-1.54
y
=
17.08
or
4.92
Question 2:
y
=
x
2
−
12
x
+
7
y
=
x
−
8
x
=
11.7
or
1.28
y
=
3.7
or
-6.72
Question 3:
y
=
3
x
2
+
6
x
+
9
y
=
x
+
10
x
=
0.18
or
-1.85
y
=
10.18
or
8.15
Question 4:
y
=
3
x
2
+
7
x
+
1
y
=
2
x
−
1
x
=
-0.667
or
-1
y
=
-2.334
or
-3
Question 5:
y
=
x
2
+
3
x
+
2
y
=
3
x
+
5
x
=
1.73
or
-1.73
y
=
10.19
or
-0.19
Question 6:
y
=
x
2
−
6
x
−
9
y
=
2
x
−
10
x
=
7.87
or
0.127
y
=
5.74
or
-9.746
