Use the Quadratic Formula to Solve with Surds.
Question 1:
x
2
−
14
x
+
7
=
0
x
=
7
±
42
Question 2:
x
2
+
12
x
−
1
=
0
x
=
-6
±
37
Question 3:
x
2
−
11
x
+
2
=
0
x
=
11
±
113
2
Question 4:
x
2
+
10
x
−
1
=
0
x
=
-5
±
26
Question 5:
x
2
+
15
x
−
6
=
0
x
=
-15
±
249
2
Question 6:
x
2
−
8
x
−
2
=
0
x
=
4
±
3
2