Solve Using Completing the Square.
Question 1:
x
2
+
10
x
+
10
=
0
x
=
-5
±
15
Question 2:
x
2
+
14
x
−
6
=
0
x
=
-7
±
55
Question 3:
x
2
−
2
x
−
8
=
0
x
=
4
or
-2
Question 4:
x
2
+
16
x
−
4
=
0
x
=
-8
±
2
17
Question 5:
x
2
+
6
x
+
3
=
0
x
=
-3
±
6
Question 6:
x
2
+
6
x
−
4
=
0
x
=
-3
±
13