Write the following in the form
x
+
a
2
+
b
Question 1:
x
2
+
6
x
−
6
x
+
3
2
−
15
Question 2:
x
2
−
6
x
−
10
x
−
3
2
−
19
Question 3:
x
2
−
8
x
+
4
x
−
4
2
−
12
Question 4:
x
2
+
10
x
+
5
x
+
5
2
−
20
Question 5:
x
2
−
4
x
−
10
x
−
2
2
−
14
Question 6:
x
2
+
12
x
+
8
x
+
6
2
−
28