E
E
x
x
p
p
a
a
n
n
d
d
i
i
n
n
g
g
p
p
o
o
l
l
y
y
n
n
o
o
m
m
i
i
a
a
l
l
s
s
Expand the expressions below.
4
(i)
(
2
x
+
3
)
5
(ii)
(
3
a
−
2
b
)
(i)
Use
POLYFORM((2X+3)^4,X)
to expand the polynomial.
Use the
key to examine the result.
3
Result:
16
x
4
+
96
x
+
216
x
2
+
216
x
+
81
(ii)
Use
POLYFORM((3A-2B)^5,B)
to expand the polynomial
as a function of
B
. Then use the polynomial function again,
ing the result from the first expansion and expanding
this time as a function of
A
. The
key can then be
used to view it, using the left and right arrows to scroll the
screen left and right.
4
3
2
2
3
5
Result:
243
a
5
−
810
a b
+
1080
a b
−
720
a b
+
240
ab
4
−
32
b
304