HP 39g+ Graphing manual Polyeval, Polyform, Polyroot

POLYEVAL	Polynomial evaluation. Evaluates a polynomial with the
	specified coefficients for the value of x.
	POLYEVAL([coefficients], value)
	Example
	For x4+2x3–25x2–26x+120:
	POLYEVAL([1,2,-25,-26,120],8) returns
	3432.
POLYFORM	Polynomial form. Creates a polynomial in variable1 from
	expression.
	POLYFORM(expression, variable1)
	Example
	POLYFORM((X+1)^2+1,X) returns X^2+2*X+2.
POLYROOT	Polynomial roots. Returns the roots for the nth-order
	polynomial with the specified n+1 coefficients.
	POLYROOT([coefficients])
	Example
	For x4+2x3–25x2–26x+120:
	POLYROOT([1,2,-25,-26,120]) returns
	[2,-3,4,-5].
H I N T
	The results of POLYROOT will often not be easily seen in
	HOME due to the number of decimal places, especially if
	they are complex numbers. It is better to store the results
	of POLYROOT to a matrix.
	For example, POLYROOT([1,0,0,-8]	M1 will
	store the three complex cube roots of 8 to matrix M1 as
	a complex vector. Then you can see them easily by going
	to the Matrix Catalog. and access them individually in
	calculations by referring to M1(1), M1(2) etc.

Using mathematical functions 11-11