Use the Quadratic Formula to Solve with Surds.
Question 1:
x
2
−
15
x
+
10
=
0
x
=
15
±
185
2
Question 2:
x
2
+
5
x
+
6
=
0
x
=
-2
or
-3
Question 3:
x
2
+
4
x
−
10
=
0
x
=
-2
±
14
Question 4:
x
2
−
8
x
+
1
=
0
x
=
4
±
15
Question 5:
x
2
+
10
x
+
4
=
0
x
=
-5
±
21
Question 6:
x
2
−
6
x
−
6
=
0
x
=
3
±
15
