Expanding Cubics
Question 1:
x
−
1
x
+
3
x
+
5
x
3
+
7
x
2
+
7
x
−
15
Question 2:
x
+
5
x
−
5
x
+
2
x
3
+
2
x
2
−
25
x
−
50
Question 3:
x
+
1
x
−
1
x
+
3
x
3
+
3
x
2
−
x
−
3
Question 4:
x
+
5
x
+
5
x
+
2
x
3
+
12
x
2
+
45
x
+
50
