HP 39G

290
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Expand the expressions below.
(i)
()
4
23x +
(ii)
()
5
32ab−
(i) Use POLYFORM((2X+3)^4,X) to
expand the polynomial. Use the
key to examine the result.
Result:
43 2
16 96 216 216 81xx x x++ + +
(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.
Result:
5 4 32 23 4 5
243 810 1080 720 240 32aababababb−+ − +−