Expanding Brackets
Question 1:
6
k
+
3
6
k
+
18
Question 2:
3
7
s
+
9
21
s
+
27
Question 3:
2
3
t
+
4
6
t
+
8
Question 4:
m
9
m
+
2
9
m
2
+
2m
Question 5:
d
3
u
−
10
3
d
u
−
10d
Question 6:
7
x
7
x
−
8
k
49
x
2
−
56
kx
