Solve Using Completing the Square.
Question 1:
x
2
+
8
x
−
4
=
0
x
=
-4
±
2
5
Question 2:
x
2
+
6
x
−
7
=
0
x
=
1
or
-7
Question 3:
x
2
+
6
x
−
7
=
0
x
=
1
or
-7
Question 4:
x
2
+
12
x
+
2
=
0
x
=
-6
±
34
Question 5:
x
2
−
12
x
+
7
=
0
x
=
6
±
29
Question 6:
x
2
−
2
x
−
4
=
0
x
=
1
±
5
