Real zeros of real polynomials

Please specify the degree n of the polynomial:

n =

Important: 1 <= n <= 50 !

zeroes specified	Type here the n zeroes, in any order. You must write the complex numbers as pairs in parentheses, separated by comma. (1,0),(-1,1),(-1,-1)
input of coefficients	You must type the coefficients as real numbers in this textarea, beginning with the leading coefficient. The prepared case is for x3-6 x2 +11 x -6 . 1,-6,11,-6,

Should the zeroes found be in a given interval [alpha,beta] or should all real zeroes be found using Marden's bound ?

	Input of an interval: a = b =
	Use Marden's bound

Click on "evaluate", in order to submit your input.