Quadratic Simultaneous Equations
Question 1:
y
=
2
x
2
+
9
x
−
7
y
=
2
x
−
9
x
=
-0.314
or
-3.19
y
=
-9.628
or
-15.38
Question 2:
y
=
x
2
−
15
x
+
2
y
=
2
x
+
10
x
=
17.5
or
-0.458
y
=
45
or
9.084
Question 3:
y
=
x
2
+
x
−
10
y
=
x
−
7
x
=
1.73
or
-1.73
y
=
-5.27
or
-8.73
Question 4:
y
=
x
2
+
10
x
+
6
y
=
2
x
−
4
x
=
-1.55
or
-6.45
y
=
-7.1
or
-16.9
Question 5:
y
=
3
x
2
+
11
x
−
2
y
=
x
+
7
x
=
0.737
or
-4.07
y
=
7.737
or
2.93
Question 6:
y
=
x
2
−
x
+
10
y
=
2
x
+
8
x
=
2
or
1
y
=
12
or
10